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Finding the Fourth Proportional to 130,398.80, 195,860.76 and 126,723.92

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Solution

The fourth proportional to 130,398.80, 195,860.76 and 126,723.92 is: 190,341.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,398.80 : 195,860.76 = 126,723.92 : x
  2. Step 2: Convert to fraction form
    130,398.80/195,860.76 = 126,723.92/x
  3. Step 3: Cross multiply
    130,398.80x = 195,860.76 × 126,723.92
  4. Step 4: Simplify right side
    130,398.80x = 24,820,243,281.38
  5. Step 5: Solve for x
    x = 24,820,243,281.38/130,398.80
  6. Step 6: Final answer
    x = 190,341.04

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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.