Home / 113,910.20-157,263.22-78,152.75

Finding the Fourth Proportional to 113,910.20, 157,263.22 and 78,152.75

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Solution

The fourth proportional to 113,910.20, 157,263.22 and 78,152.75 is: 107,896.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,910.20 : 157,263.22 = 78,152.75 : x
  2. Step 2: Convert to fraction form
    113,910.20/157,263.22 = 78,152.75/x
  3. Step 3: Cross multiply
    113,910.20x = 157,263.22 × 78,152.75
  4. Step 4: Simplify right side
    113,910.20x = 12,290,553,017.97
  5. Step 5: Solve for x
    x = 12,290,553,017.97/113,910.20
  6. Step 6: Final answer
    x = 107,896.86

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1.5x scale

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.