Home / 88,732.10-133,098.15-72,985.70

Finding the Fourth Proportional to 88,732.10, 133,098.15 and 72,985.70

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Solution

The fourth proportional to 88,732.10, 133,098.15 and 72,985.70 is: 109,478.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,732.10 : 133,098.15 = 72,985.70 : x
  2. Step 2: Convert to fraction form
    88,732.10/133,098.15 = 72,985.70/x
  3. Step 3: Cross multiply
    88,732.10x = 133,098.15 × 72,985.70
  4. Step 4: Simplify right side
    88,732.10x = 9,714,261,646.46
  5. Step 5: Solve for x
    x = 9,714,261,646.46/88,732.10
  6. Step 6: Final answer
    x = 109,478.55

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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.