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Finding the Fourth Proportional to 131,573.65, 181,560.65 and 77,849.32

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Solution

The fourth proportional to 131,573.65, 181,560.65 and 77,849.32 is: 107,425.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,573.65 : 181,560.65 = 77,849.32 : x
  2. Step 2: Convert to fraction form
    131,573.65/181,560.65 = 77,849.32/x
  3. Step 3: Cross multiply
    131,573.65x = 181,560.65 × 77,849.32
  4. Step 4: Simplify right side
    131,573.65x = 14,134,373,141.26
  5. Step 5: Solve for x
    x = 14,134,373,141.26/131,573.65
  6. Step 6: Final answer
    x = 107,425.56

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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.