Home / 104,631.90-156,947.85-73,139.10

Finding the Fourth Proportional to 104,631.90, 156,947.85 and 73,139.10

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Solution

The fourth proportional to 104,631.90, 156,947.85 and 73,139.10 is: 109,708.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,631.90 : 156,947.85 = 73,139.10 : x
  2. Step 2: Convert to fraction form
    104,631.90/156,947.85 = 73,139.10/x
  3. Step 3: Cross multiply
    104,631.90x = 156,947.85 × 73,139.10
  4. Step 4: Simplify right side
    104,631.90x = 11,479,024,495.94
  5. Step 5: Solve for x
    x = 11,479,024,495.94/104,631.90
  6. Step 6: Final answer
    x = 109,708.65

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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.