Home / 105,574,370,956.90-145,697,866,401.80-65,489,264,361.71

Finding the Fourth Proportional to 105,574,370,956.90, 145,697,866,401.80 and 65,489,264,361.71

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Solution

The fourth proportional to 105,574,370,956.90, 145,697,866,401.80 and 65,489,264,361.71 is: 90,378,431,841.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,574,370,956.90 : 145,697,866,401.80 = 65,489,264,361.71 : x
  2. Step 2: Convert to fraction form
    105,574,370,956.90/145,697,866,401.80 = 65,489,264,361.71/x
  3. Step 3: Cross multiply
    105,574,370,956.90x = 145,697,866,401.80 × 65,489,264,361.71
  4. Step 4: Simplify right side
    105,574,370,956.90x = 9,541,646,089,723,857,338,368
  5. Step 5: Solve for x
    x = 9,541,646,089,723,857,338,368/105,574,370,956.90
  6. Step 6: Final answer
    x = 90,378,431,841.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.