Home / 112,811.13-155,679.30-67,490.96

Finding the Fourth Proportional to 112,811.13, 155,679.30 and 67,490.96

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Solution

The fourth proportional to 112,811.13, 155,679.30 and 67,490.96 is: 93,137.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,811.13 : 155,679.30 = 67,490.96 : x
  2. Step 2: Convert to fraction form
    112,811.13/155,679.30 = 67,490.96/x
  3. Step 3: Cross multiply
    112,811.13x = 155,679.30 × 67,490.96
  4. Step 4: Simplify right side
    112,811.13x = 10,506,944,630.73
  5. Step 5: Solve for x
    x = 10,506,944,630.73/112,811.13
  6. Step 6: Final answer
    x = 93,137.48

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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.