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Finding the Fourth Proportional to 135,017.92, 186,326.04 and 74,590

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Solution

The fourth proportional to 135,017.92, 186,326.04 and 74,590 is: 102,934.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,017.92 : 186,326.04 = 74,590 : x
  2. Step 2: Convert to fraction form
    135,017.92/186,326.04 = 74,590/x
  3. Step 3: Cross multiply
    135,017.92x = 186,326.04 × 74,590
  4. Step 4: Simplify right side
    135,017.92x = 13,898,059,323.60
  5. Step 5: Solve for x
    x = 13,898,059,323.60/135,017.92
  6. Step 6: Final answer
    x = 102,934.92

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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.