Home / 138,719,241.60-208,078,862.40-90,346,300.80

Finding the Fourth Proportional to 138,719,241.60, 208,078,862.40 and 90,346,300.80

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Solution

The fourth proportional to 138,719,241.60, 208,078,862.40 and 90,346,300.80 is: 135,519,451.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,719,241.60 : 208,078,862.40 = 90,346,300.80 : x
  2. Step 2: Convert to fraction form
    138,719,241.60/208,078,862.40 = 90,346,300.80/x
  3. Step 3: Cross multiply
    138,719,241.60x = 208,078,862.40 × 90,346,300.80
  4. Step 4: Simplify right side
    138,719,241.60x = 18,799,155,492,512,208
  5. Step 5: Solve for x
    x = 18,799,155,492,512,208/138,719,241.60
  6. Step 6: Final answer
    x = 135,519,451.20

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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.