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Finding the Fourth Proportional to 121,440, 182,034.88 and 46,542.72

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Solution

The fourth proportional to 121,440, 182,034.88 and 46,542.72 is: 69,766.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,440 : 182,034.88 = 46,542.72 : x
  2. Step 2: Convert to fraction form
    121,440/182,034.88 = 46,542.72/x
  3. Step 3: Cross multiply
    121,440x = 182,034.88 × 46,542.72
  4. Step 4: Simplify right side
    121,440x = 8,472,398,450.07
  5. Step 5: Solve for x
    x = 8,472,398,450.07/121,440
  6. Step 6: Final answer
    x = 69,766.13

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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.