Home / 104,701.20-156,816.36-81,256.56

Finding the Fourth Proportional to 104,701.20, 156,816.36 and 81,256.56

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Solution

The fourth proportional to 104,701.20, 156,816.36 and 81,256.56 is: 121,702.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,701.20 : 156,816.36 = 81,256.56 : x
  2. Step 2: Convert to fraction form
    104,701.20/156,816.36 = 81,256.56/x
  3. Step 3: Cross multiply
    104,701.20x = 156,816.36 × 81,256.56
  4. Step 4: Simplify right side
    104,701.20x = 12,742,357,965.32
  5. Step 5: Solve for x
    x = 12,742,357,965.32/104,701.20
  6. Step 6: Final answer
    x = 121,702.12

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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.