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Finding the Fourth Proportional to 154,304, 212,929.44 and 86,309.16

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Solution

The fourth proportional to 154,304, 212,929.44 and 86,309.16 is: 119,101.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,304 : 212,929.44 = 86,309.16 : x
  2. Step 2: Convert to fraction form
    154,304/212,929.44 = 86,309.16/x
  3. Step 3: Cross multiply
    154,304x = 212,929.44 × 86,309.16
  4. Step 4: Simplify right side
    154,304x = 18,377,761,105.67
  5. Step 5: Solve for x
    x = 18,377,761,105.67/154,304
  6. Step 6: Final answer
    x = 119,101.00

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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.