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Finding the Fourth Proportional to 158,377.52, 218,560.77 and 85,780.37

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Solution

The fourth proportional to 158,377.52, 218,560.77 and 85,780.37 is: 118,376.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,377.52 : 218,560.77 = 85,780.37 : x
  2. Step 2: Convert to fraction form
    158,377.52/218,560.77 = 85,780.37/x
  3. Step 3: Cross multiply
    158,377.52x = 218,560.77 × 85,780.37
  4. Step 4: Simplify right side
    158,377.52x = 18,748,222,625.28
  5. Step 5: Solve for x
    x = 18,748,222,625.28/158,377.52
  6. Step 6: Final answer
    x = 118,376.79

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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.