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Finding the Fourth Proportional to 99,490.65, 137,252.73 and 67,214.89

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Solution

The fourth proportional to 99,490.65, 137,252.73 and 67,214.89 is: 92,726.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,490.65 : 137,252.73 = 67,214.89 : x
  2. Step 2: Convert to fraction form
    99,490.65/137,252.73 = 67,214.89/x
  3. Step 3: Cross multiply
    99,490.65x = 137,252.73 × 67,214.89
  4. Step 4: Simplify right side
    99,490.65x = 9,225,427,149.15
  5. Step 5: Solve for x
    x = 9,225,427,149.15/99,490.65
  6. Step 6: Final answer
    x = 92,726.57

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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.