Home / 138,719,277.60-208,078,916.40-90,346,336.80

Finding the Fourth Proportional to 138,719,277.60, 208,078,916.40 and 90,346,336.80

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Solution

The fourth proportional to 138,719,277.60, 208,078,916.40 and 90,346,336.80 is: 135,519,505.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,719,277.60 : 208,078,916.40 = 90,346,336.80 : x
  2. Step 2: Convert to fraction form
    138,719,277.60/208,078,916.40 = 90,346,336.80/x
  3. Step 3: Cross multiply
    138,719,277.60x = 208,078,916.40 × 90,346,336.80
  4. Step 4: Simplify right side
    138,719,277.60x = 18,799,167,862,053,444
  5. Step 5: Solve for x
    x = 18,799,167,862,053,444/138,719,277.60
  6. Step 6: Final answer
    x = 135,519,505.20

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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.