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Finding the Fourth Proportional to 121,423.20, 182,134.80 and 91,898.70

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Solution

The fourth proportional to 121,423.20, 182,134.80 and 91,898.70 is: 137,848.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,423.20 : 182,134.80 = 91,898.70 : x
  2. Step 2: Convert to fraction form
    121,423.20/182,134.80 = 91,898.70/x
  3. Step 3: Cross multiply
    121,423.20x = 182,134.80 × 91,898.70
  4. Step 4: Simplify right side
    121,423.20x = 16,737,951,344.76
  5. Step 5: Solve for x
    x = 16,737,951,344.76/121,423.20
  6. Step 6: Final answer
    x = 137,848.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.