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Finding the Fourth Proportional to 158,374.95, 218,557.49 and 86,757.55

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Solution

The fourth proportional to 158,374.95, 218,557.49 and 86,757.55 is: 119,725.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,374.95 : 218,557.49 = 86,757.55 : x
  2. Step 2: Convert to fraction form
    158,374.95/218,557.49 = 86,757.55/x
  3. Step 3: Cross multiply
    158,374.95x = 218,557.49 × 86,757.55
  4. Step 4: Simplify right side
    158,374.95x = 18,961,512,366.55
  5. Step 5: Solve for x
    x = 18,961,512,366.55/158,374.95
  6. Step 6: Final answer
    x = 119,725.45

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1.5x scale

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.