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Finding the Fourth Proportional to 99,641.66, 137,501.43 and 54,318.65

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Solution

The fourth proportional to 99,641.66, 137,501.43 and 54,318.65 is: 74,957.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,641.66 : 137,501.43 = 54,318.65 : x
  2. Step 2: Convert to fraction form
    99,641.66/137,501.43 = 54,318.65/x
  3. Step 3: Cross multiply
    99,641.66x = 137,501.43 × 54,318.65
  4. Step 4: Simplify right side
    99,641.66x = 7,468,892,050.67
  5. Step 5: Solve for x
    x = 7,468,892,050.67/99,641.66
  6. Step 6: Final answer
    x = 74,957.52

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1.5x scale

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.