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Finding the Fourth Proportional to 158,956.59, 219,359.43 and 87,336.39

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Solution

The fourth proportional to 158,956.59, 219,359.43 and 87,336.39 is: 120,523.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,956.59 : 219,359.43 = 87,336.39 : x
  2. Step 2: Convert to fraction form
    158,956.59/219,359.43 = 87,336.39/x
  3. Step 3: Cross multiply
    158,956.59x = 219,359.43 × 87,336.39
  4. Step 4: Simplify right side
    158,956.59x = 19,158,060,728.66
  5. Step 5: Solve for x
    x = 19,158,060,728.66/158,956.59
  6. Step 6: Final answer
    x = 120,523.85

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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.