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Finding the Fourth Proportional to 158,702.64, 218,975.40 and 91,595.76

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Solution

The fourth proportional to 158,702.64, 218,975.40 and 91,595.76 is: 126,382.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,702.64 : 218,975.40 = 91,595.76 : x
  2. Step 2: Convert to fraction form
    158,702.64/218,975.40 = 91,595.76/x
  3. Step 3: Cross multiply
    158,702.64x = 218,975.40 × 91,595.76
  4. Step 4: Simplify right side
    158,702.64x = 20,057,218,184.30
  5. Step 5: Solve for x
    x = 20,057,218,184.30/158,702.64
  6. Step 6: Final answer
    x = 126,382.39

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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.