Home / 142,349.84-196,446.90-78,691.74

Finding the Fourth Proportional to 142,349.84, 196,446.90 and 78,691.74

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Solution

The fourth proportional to 142,349.84, 196,446.90 and 78,691.74 is: 108,596.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,349.84 : 196,446.90 = 78,691.74 : x
  2. Step 2: Convert to fraction form
    142,349.84/196,446.90 = 78,691.74/x
  3. Step 3: Cross multiply
    142,349.84x = 196,446.90 × 78,691.74
  4. Step 4: Simplify right side
    142,349.84x = 15,458,748,378.61
  5. Step 5: Solve for x
    x = 15,458,748,378.61/142,349.84
  6. Step 6: Final answer
    x = 108,596.88

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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.