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Finding the Fourth Proportional to 153,877.62, 212,356.62 and 89,342.04

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Solution

The fourth proportional to 153,877.62, 212,356.62 and 89,342.04 is: 123,295.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,877.62 : 212,356.62 = 89,342.04 : x
  2. Step 2: Convert to fraction form
    153,877.62/212,356.62 = 89,342.04/x
  3. Step 3: Cross multiply
    153,877.62x = 212,356.62 × 89,342.04
  4. Step 4: Simplify right side
    153,877.62x = 18,972,373,638.30
  5. Step 5: Solve for x
    x = 18,972,373,638.30/153,877.62
  6. Step 6: Final answer
    x = 123,295.21

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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.