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Finding the Fourth Proportional to 140,658.97, 210,988.46 and 42,162.97

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Solution

The fourth proportional to 140,658.97, 210,988.46 and 42,162.97 is: 63,244.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,658.97 : 210,988.46 = 42,162.97 : x
  2. Step 2: Convert to fraction form
    140,658.97/210,988.46 = 42,162.97/x
  3. Step 3: Cross multiply
    140,658.97x = 210,988.46 × 42,162.97
  4. Step 4: Simplify right side
    140,658.97x = 8,895,900,109.33
  5. Step 5: Solve for x
    x = 8,895,900,109.33/140,658.97
  6. Step 6: Final answer
    x = 63,244.46

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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.