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Finding the Fourth Proportional to 126,691.84, 190,010.08 and 42,463.84

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Solution

The fourth proportional to 126,691.84, 190,010.08 and 42,463.84 is: 63,686.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,691.84 : 190,010.08 = 42,463.84 : x
  2. Step 2: Convert to fraction form
    126,691.84/190,010.08 = 42,463.84/x
  3. Step 3: Cross multiply
    126,691.84x = 190,010.08 × 42,463.84
  4. Step 4: Simplify right side
    126,691.84x = 8,068,557,635.51
  5. Step 5: Solve for x
    x = 8,068,557,635.51/126,691.84
  6. Step 6: Final answer
    x = 63,686.48

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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.