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Finding the Fourth Proportional to 169,487.80, 254,231.70 and 156,657.40

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Solution

The fourth proportional to 169,487.80, 254,231.70 and 156,657.40 is: 234,986.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,487.80 : 254,231.70 = 156,657.40 : x
  2. Step 2: Convert to fraction form
    169,487.80/254,231.70 = 156,657.40/x
  3. Step 3: Cross multiply
    169,487.80x = 254,231.70 × 156,657.40
  4. Step 4: Simplify right side
    169,487.80x = 39,827,277,119.58
  5. Step 5: Solve for x
    x = 39,827,277,119.58/169,487.80
  6. Step 6: Final answer
    x = 234,986.10

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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.