Home / 90,570,918.20-136,461,343.51-81,946,074.11

Finding the Fourth Proportional to 90,570,918.20, 136,461,343.51 and 81,946,074.11

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Solution

The fourth proportional to 90,570,918.20, 136,461,343.51 and 81,946,074.11 is: 123,466,467.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,570,918.20 : 136,461,343.51 = 81,946,074.11 : x
  2. Step 2: Convert to fraction form
    90,570,918.20/136,461,343.51 = 81,946,074.11/x
  3. Step 3: Cross multiply
    90,570,918.20x = 136,461,343.51 × 81,946,074.11
  4. Step 4: Simplify right side
    90,570,918.20x = 11,182,471,368,420,626
  5. Step 5: Solve for x
    x = 11,182,471,368,420,626/90,570,918.20
  6. Step 6: Final answer
    x = 123,466,467.94

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.