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Finding the Fourth Proportional to 152,042.64, 209,818.32 and 84,974.64

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Solution

The fourth proportional to 152,042.64, 209,818.32 and 84,974.64 is: 117,264.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,042.64 : 209,818.32 = 84,974.64 : x
  2. Step 2: Convert to fraction form
    152,042.64/209,818.32 = 84,974.64/x
  3. Step 3: Cross multiply
    152,042.64x = 209,818.32 × 84,974.64
  4. Step 4: Simplify right side
    152,042.64x = 17,829,236,207.40
  5. Step 5: Solve for x
    x = 17,829,236,207.40/152,042.64
  6. Step 6: Final answer
    x = 117,264.71

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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.