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Finding the Fourth Proportional to 125,215.95, 172,797.67 and 67,856.87

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Solution

The fourth proportional to 125,215.95, 172,797.67 and 67,856.87 is: 93,642.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,215.95 : 172,797.67 = 67,856.87 : x
  2. Step 2: Convert to fraction form
    125,215.95/172,797.67 = 67,856.87/x
  3. Step 3: Cross multiply
    125,215.95x = 172,797.67 × 67,856.87
  4. Step 4: Simplify right side
    125,215.95x = 11,725,508,335.15
  5. Step 5: Solve for x
    x = 11,725,508,335.15/125,215.95
  6. Step 6: Final answer
    x = 93,642.29

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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.