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Finding the Fourth Proportional to 99,502.65, 137,312.03 and 54,790.65

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Solution

The fourth proportional to 99,502.65, 137,312.03 and 54,790.65 is: 75,610.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,502.65 : 137,312.03 = 54,790.65 : x
  2. Step 2: Convert to fraction form
    99,502.65/137,312.03 = 54,790.65/x
  3. Step 3: Cross multiply
    99,502.65x = 137,312.03 × 54,790.65
  4. Step 4: Simplify right side
    99,502.65x = 7,523,415,102.57
  5. Step 5: Solve for x
    x = 7,523,415,102.57/99,502.65
  6. Step 6: Final answer
    x = 75,610.20

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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.