Home / 126,689.46-174,819.55-85,770.35

Finding the Fourth Proportional to 126,689.46, 174,819.55 and 85,770.35

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Solution

The fourth proportional to 126,689.46, 174,819.55 and 85,770.35 is: 118,355.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,689.46 : 174,819.55 = 85,770.35 : x
  2. Step 2: Convert to fraction form
    126,689.46/174,819.55 = 85,770.35/x
  3. Step 3: Cross multiply
    126,689.46x = 174,819.55 × 85,770.35
  4. Step 4: Simplify right side
    126,689.46x = 14,994,333,990.34
  5. Step 5: Solve for x
    x = 14,994,333,990.34/126,689.46
  6. Step 6: Final answer
    x = 118,355.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.