Home / 138,752.46-208,238.04-71,281.74

Finding the Fourth Proportional to 138,752.46, 208,238.04 and 71,281.74

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Solution

The fourth proportional to 138,752.46, 208,238.04 and 71,281.74 is: 106,978.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,752.46 : 208,238.04 = 71,281.74 : x
  2. Step 2: Convert to fraction form
    138,752.46/208,238.04 = 71,281.74/x
  3. Step 3: Cross multiply
    138,752.46x = 208,238.04 × 71,281.74
  4. Step 4: Simplify right side
    138,752.46x = 14,843,569,825.39
  5. Step 5: Solve for x
    x = 14,843,569,825.39/138,752.46
  6. Step 6: Final answer
    x = 106,978.79

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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.