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Finding the Fourth Proportional to 131,042.64, 180,838.64 and 77,327.76

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Solution

The fourth proportional to 131,042.64, 180,838.64 and 77,327.76 is: 106,712.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,042.64 : 180,838.64 = 77,327.76 : x
  2. Step 2: Convert to fraction form
    131,042.64/180,838.64 = 77,327.76/x
  3. Step 3: Cross multiply
    131,042.64x = 180,838.64 × 77,327.76
  4. Step 4: Simplify right side
    131,042.64x = 13,983,846,952.65
  5. Step 5: Solve for x
    x = 13,983,846,952.65/131,042.64
  6. Step 6: Final answer
    x = 106,712.19

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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.