Home / 104,575.18-156,726.69-42,172.78

Finding the Fourth Proportional to 104,575.18, 156,726.69 and 42,172.78

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Solution

The fourth proportional to 104,575.18, 156,726.69 and 42,172.78 is: 63,204.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,575.18 : 156,726.69 = 42,172.78 : x
  2. Step 2: Convert to fraction form
    104,575.18/156,726.69 = 42,172.78/x
  3. Step 3: Cross multiply
    104,575.18x = 156,726.69 × 42,172.78
  4. Step 4: Simplify right side
    104,575.18x = 6,609,600,217.50
  5. Step 5: Solve for x
    x = 6,609,600,217.50/104,575.18
  6. Step 6: Final answer
    x = 63,204.29

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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.