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Finding the Fourth Proportional to 121,527.54, 167,913.54 and 87,468.66

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Solution

The fourth proportional to 121,527.54, 167,913.54 and 87,468.66 is: 120,854.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,527.54 : 167,913.54 = 87,468.66 : x
  2. Step 2: Convert to fraction form
    121,527.54/167,913.54 = 87,468.66/x
  3. Step 3: Cross multiply
    121,527.54x = 167,913.54 × 87,468.66
  4. Step 4: Simplify right side
    121,527.54x = 14,687,172,339.66
  5. Step 5: Solve for x
    x = 14,687,172,339.66/121,527.54
  6. Step 6: Final answer
    x = 120,854.68

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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.