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Finding the Fourth Proportional to 161,874.30, 242,811.45 and 83,142.30

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Solution

The fourth proportional to 161,874.30, 242,811.45 and 83,142.30 is: 124,713.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,874.30 : 242,811.45 = 83,142.30 : x
  2. Step 2: Convert to fraction form
    161,874.30/242,811.45 = 83,142.30/x
  3. Step 3: Cross multiply
    161,874.30x = 242,811.45 × 83,142.30
  4. Step 4: Simplify right side
    161,874.30x = 20,187,902,419.34
  5. Step 5: Solve for x
    x = 20,187,902,419.34/161,874.30
  6. Step 6: Final answer
    x = 124,713.45

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1.5x scale

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.