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Finding the Fourth Proportional to 134,710.11, 185,963.72 and 78,100.83

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Solution

The fourth proportional to 134,710.11, 185,963.72 and 78,100.83 is: 107,816.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,710.11 : 185,963.72 = 78,100.83 : x
  2. Step 2: Convert to fraction form
    134,710.11/185,963.72 = 78,100.83/x
  3. Step 3: Cross multiply
    134,710.11x = 185,963.72 × 78,100.83
  4. Step 4: Simplify right side
    134,710.11x = 14,523,920,491.38
  5. Step 5: Solve for x
    x = 14,523,920,491.38/134,710.11
  6. Step 6: Final answer
    x = 107,816.11

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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.