Home / 99,102.20-136,761.40-53,780.17

Finding the Fourth Proportional to 99,102.20, 136,761.40 and 53,780.17

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Solution

The fourth proportional to 99,102.20, 136,761.40 and 53,780.17 is: 74,216.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,102.20 : 136,761.40 = 53,780.17 : x
  2. Step 2: Convert to fraction form
    99,102.20/136,761.40 = 53,780.17/x
  3. Step 3: Cross multiply
    99,102.20x = 136,761.40 × 53,780.17
  4. Step 4: Simplify right side
    99,102.20x = 7,355,051,020.67
  5. Step 5: Solve for x
    x = 7,355,051,020.67/99,102.20
  6. Step 6: Final answer
    x = 74,216.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.