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Finding the Fourth Proportional to 495,150.80, 742,726.20 and 121,173.80

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Solution

The fourth proportional to 495,150.80, 742,726.20 and 121,173.80 is: 181,760.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,150.80 : 742,726.20 = 121,173.80 : x
  2. Step 2: Convert to fraction form
    495,150.80/742,726.20 = 121,173.80/x
  3. Step 3: Cross multiply
    495,150.80x = 742,726.20 × 121,173.80
  4. Step 4: Simplify right side
    495,150.80x = 89,998,956,013.56
  5. Step 5: Solve for x
    x = 89,998,956,013.56/495,150.80
  6. Step 6: Final answer
    x = 181,760.70

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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.