Home / 89,419,712.40-134,129,568.60-80,916,656.40

Finding the Fourth Proportional to 89,419,712.40, 134,129,568.60 and 80,916,656.40

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Solution

The fourth proportional to 89,419,712.40, 134,129,568.60 and 80,916,656.40 is: 121,374,984.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,419,712.40 : 134,129,568.60 = 80,916,656.40 : x
  2. Step 2: Convert to fraction form
    89,419,712.40/134,129,568.60 = 80,916,656.40/x
  3. Step 3: Cross multiply
    89,419,712.40x = 134,129,568.60 × 80,916,656.40
  4. Step 4: Simplify right side
    89,419,712.40x = 10,853,316,215,486,430
  5. Step 5: Solve for x
    x = 10,853,316,215,486,430/89,419,712.40
  6. Step 6: Final answer
    x = 121,374,984.60

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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.