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Finding the Fourth Proportional to 480,134.83, 720,202.80 and 125,148.55

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Solution

The fourth proportional to 480,134.83, 720,202.80 and 125,148.55 is: 187,722.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,134.83 : 720,202.80 = 125,148.55 : x
  2. Step 2: Convert to fraction form
    480,134.83/720,202.80 = 125,148.55/x
  3. Step 3: Cross multiply
    480,134.83x = 720,202.80 × 125,148.55
  4. Step 4: Simplify right side
    480,134.83x = 90,132,336,125.94
  5. Step 5: Solve for x
    x = 90,132,336,125.94/480,134.83
  6. Step 6: Final answer
    x = 187,722.97

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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.