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Finding the Fourth Proportional to 155,952, 215,200.68 and 92,278.64

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Solution

The fourth proportional to 155,952, 215,200.68 and 92,278.64 is: 127,336.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,952 : 215,200.68 = 92,278.64 : x
  2. Step 2: Convert to fraction form
    155,952/215,200.68 = 92,278.64/x
  3. Step 3: Cross multiply
    155,952x = 215,200.68 × 92,278.64
  4. Step 4: Simplify right side
    155,952x = 19,858,426,077.48
  5. Step 5: Solve for x
    x = 19,858,426,077.48/155,952
  6. Step 6: Final answer
    x = 127,336.78

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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.