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Finding the Fourth Proportional to 136,655.94, 205,047.18 and 52,387.92

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Solution

The fourth proportional to 136,655.94, 205,047.18 and 52,387.92 is: 78,606.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,655.94 : 205,047.18 = 52,387.92 : x
  2. Step 2: Convert to fraction form
    136,655.94/205,047.18 = 52,387.92/x
  3. Step 3: Cross multiply
    136,655.94x = 205,047.18 × 52,387.92
  4. Step 4: Simplify right side
    136,655.94x = 10,741,995,262.07
  5. Step 5: Solve for x
    x = 10,741,995,262.07/136,655.94
  6. Step 6: Final answer
    x = 78,606.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.