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Finding the Fourth Proportional to 162,125, 242,987.82 and 115,123.40

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Solution

The fourth proportional to 162,125, 242,987.82 and 115,123.40 is: 172,543.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,125 : 242,987.82 = 115,123.40 : x
  2. Step 2: Convert to fraction form
    162,125/242,987.82 = 115,123.40/x
  3. Step 3: Cross multiply
    162,125x = 242,987.82 × 115,123.40
  4. Step 4: Simplify right side
    162,125x = 27,973,583,996.99
  5. Step 5: Solve for x
    x = 27,973,583,996.99/162,125
  6. Step 6: Final answer
    x = 172,543.31

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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.