Home / 90,575,372.40-135,597,337.56-81,225,553.92

Finding the Fourth Proportional to 90,575,372.40, 135,597,337.56 and 81,225,553.92

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Solution

The fourth proportional to 90,575,372.40, 135,597,337.56 and 81,225,553.92 is: 121,600,039.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,575,372.40 : 135,597,337.56 = 81,225,553.92 : x
  2. Step 2: Convert to fraction form
    90,575,372.40/135,597,337.56 = 81,225,553.92/x
  3. Step 3: Cross multiply
    90,575,372.40x = 135,597,337.56 × 81,225,553.92
  4. Step 4: Simplify right side
    90,575,372.40x = 11,013,968,853,388,222
  5. Step 5: Solve for x
    x = 11,013,968,853,388,222/90,575,372.40
  6. Step 6: Final answer
    x = 121,600,039.41

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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.