Home / 103,491,116.40-155,236,674.60-30,719,128.80

Finding the Fourth Proportional to 103,491,116.40, 155,236,674.60 and 30,719,128.80

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Solution

The fourth proportional to 103,491,116.40, 155,236,674.60 and 30,719,128.80 is: 46,078,693.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,491,116.40 : 155,236,674.60 = 30,719,128.80 : x
  2. Step 2: Convert to fraction form
    103,491,116.40/155,236,674.60 = 30,719,128.80/x
  3. Step 3: Cross multiply
    103,491,116.40x = 155,236,674.60 × 30,719,128.80
  4. Step 4: Simplify right side
    103,491,116.40x = 4,768,735,401,521,088
  5. Step 5: Solve for x
    x = 4,768,735,401,521,088/103,491,116.40
  6. Step 6: Final answer
    x = 46,078,693.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.