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Finding the Fourth Proportional to 153,377.20, 229,849.80 and 121,841.20

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Solution

The fourth proportional to 153,377.20, 229,849.80 and 121,841.20 is: 182,590.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,377.20 : 229,849.80 = 121,841.20 : x
  2. Step 2: Convert to fraction form
    153,377.20/229,849.80 = 121,841.20/x
  3. Step 3: Cross multiply
    153,377.20x = 229,849.80 × 121,841.20
  4. Step 4: Simplify right side
    153,377.20x = 28,005,175,451.76
  5. Step 5: Solve for x
    x = 28,005,175,451.76/153,377.20
  6. Step 6: Final answer
    x = 182,590.21

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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.