Home / 112,371.90-168,363.45-72,908.70

Finding the Fourth Proportional to 112,371.90, 168,363.45 and 72,908.70

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Solution

The fourth proportional to 112,371.90, 168,363.45 and 72,908.70 is: 109,236.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,371.90 : 168,363.45 = 72,908.70 : x
  2. Step 2: Convert to fraction form
    112,371.90/168,363.45 = 72,908.70/x
  3. Step 3: Cross multiply
    112,371.90x = 168,363.45 × 72,908.70
  4. Step 4: Simplify right side
    112,371.90x = 12,275,160,267.02
  5. Step 5: Solve for x
    x = 12,275,160,267.02/112,371.90
  6. Step 6: Final answer
    x = 109,236.92

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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.