Home / 102,562.10-153,843.15-86,815.70

Finding the Fourth Proportional to 102,562.10, 153,843.15 and 86,815.70

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Solution

The fourth proportional to 102,562.10, 153,843.15 and 86,815.70 is: 130,223.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,562.10 : 153,843.15 = 86,815.70 : x
  2. Step 2: Convert to fraction form
    102,562.10/153,843.15 = 86,815.70/x
  3. Step 3: Cross multiply
    102,562.10x = 153,843.15 × 86,815.70
  4. Step 4: Simplify right side
    102,562.10x = 13,356,000,757.46
  5. Step 5: Solve for x
    x = 13,356,000,757.46/102,562.10
  6. Step 6: Final answer
    x = 130,223.55

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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.