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Finding the Fourth Proportional to 161,877.90, 242,874.45 and 156,117.90

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Solution

The fourth proportional to 161,877.90, 242,874.45 and 156,117.90 is: 234,232.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,877.90 : 242,874.45 = 156,117.90 : x
  2. Step 2: Convert to fraction form
    161,877.90/242,874.45 = 156,117.90/x
  3. Step 3: Cross multiply
    161,877.90x = 242,874.45 × 156,117.90
  4. Step 4: Simplify right side
    161,877.90x = 37,917,049,097.66
  5. Step 5: Solve for x
    x = 37,917,049,097.66/161,877.90
  6. Step 6: Final answer
    x = 234,232.40

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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.