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Finding the Fourth Proportional to 131,779.52, 181,855.80 and 71,350.16

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Solution

The fourth proportional to 131,779.52, 181,855.80 and 71,350.16 is: 98,463.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,779.52 : 181,855.80 = 71,350.16 : x
  2. Step 2: Convert to fraction form
    131,779.52/181,855.80 = 71,350.16/x
  3. Step 3: Cross multiply
    131,779.52x = 181,855.80 × 71,350.16
  4. Step 4: Simplify right side
    131,779.52x = 12,975,440,426.93
  5. Step 5: Solve for x
    x = 12,975,440,426.93/131,779.52
  6. Step 6: Final answer
    x = 98,463.25

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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.