Home / 126,583.85-174,761.51-78,901.78

Finding the Fourth Proportional to 126,583.85, 174,761.51 and 78,901.78

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Solution

The fourth proportional to 126,583.85, 174,761.51 and 78,901.78 is: 108,931.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,583.85 : 174,761.51 = 78,901.78 : x
  2. Step 2: Convert to fraction form
    126,583.85/174,761.51 = 78,901.78/x
  3. Step 3: Cross multiply
    126,583.85x = 174,761.51 × 78,901.78
  4. Step 4: Simplify right side
    126,583.85x = 13,788,994,214.49
  5. Step 5: Solve for x
    x = 13,788,994,214.49/126,583.85
  6. Step 6: Final answer
    x = 108,931.70

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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.