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Finding the Fourth Proportional to 176,721.60, 265,082.40 and 71,486.40

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Solution

The fourth proportional to 176,721.60, 265,082.40 and 71,486.40 is: 107,229.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,721.60 : 265,082.40 = 71,486.40 : x
  2. Step 2: Convert to fraction form
    176,721.60/265,082.40 = 71,486.40/x
  3. Step 3: Cross multiply
    176,721.60x = 265,082.40 × 71,486.40
  4. Step 4: Simplify right side
    176,721.60x = 18,949,786,479.36
  5. Step 5: Solve for x
    x = 18,949,786,479.36/176,721.60
  6. Step 6: Final answer
    x = 107,229.60

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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.