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Finding the Fourth Proportional to 121,359.60, 167,472.36 and 76,062

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Solution

The fourth proportional to 121,359.60, 167,472.36 and 76,062 is: 104,963.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,359.60 : 167,472.36 = 76,062 : x
  2. Step 2: Convert to fraction form
    121,359.60/167,472.36 = 76,062/x
  3. Step 3: Cross multiply
    121,359.60x = 167,472.36 × 76,062
  4. Step 4: Simplify right side
    121,359.60x = 12,738,282,646.32
  5. Step 5: Solve for x
    x = 12,738,282,646.32/121,359.60
  6. Step 6: Final answer
    x = 104,963.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.