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Finding the Fourth Proportional to 98,463.80, 147,695.70 and 91,854.20

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Solution

The fourth proportional to 98,463.80, 147,695.70 and 91,854.20 is: 137,781.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,463.80 : 147,695.70 = 91,854.20 : x
  2. Step 2: Convert to fraction form
    98,463.80/147,695.70 = 91,854.20/x
  3. Step 3: Cross multiply
    98,463.80x = 147,695.70 × 91,854.20
  4. Step 4: Simplify right side
    98,463.80x = 13,566,470,366.94
  5. Step 5: Solve for x
    x = 13,566,470,366.94/98,463.80
  6. Step 6: Final answer
    x = 137,781.30

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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.