Home / 99,807.58-137,545.05-71,464.06

Finding the Fourth Proportional to 99,807.58, 137,545.05 and 71,464.06

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Solution

The fourth proportional to 99,807.58, 137,545.05 and 71,464.06 is: 98,484.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,807.58 : 137,545.05 = 71,464.06 : x
  2. Step 2: Convert to fraction form
    99,807.58/137,545.05 = 71,464.06/x
  3. Step 3: Cross multiply
    99,807.58x = 137,545.05 × 71,464.06
  4. Step 4: Simplify right side
    99,807.58x = 9,829,527,705.90
  5. Step 5: Solve for x
    x = 9,829,527,705.90/99,807.58
  6. Step 6: Final answer
    x = 98,484.78

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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.