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Finding the Fourth Proportional to 142,108.92, 212,959.80 and 104,373

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Solution

The fourth proportional to 142,108.92, 212,959.80 and 104,373 is: 156,409.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,108.92 : 212,959.80 = 104,373 : x
  2. Step 2: Convert to fraction form
    142,108.92/212,959.80 = 104,373/x
  3. Step 3: Cross multiply
    142,108.92x = 212,959.80 × 104,373
  4. Step 4: Simplify right side
    142,108.92x = 22,227,253,205.40
  5. Step 5: Solve for x
    x = 22,227,253,205.40/142,108.92
  6. Step 6: Final answer
    x = 156,409.98

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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.