Home / 92,219.20-138,328.80-91,344.40

Finding the Fourth Proportional to 92,219.20, 138,328.80 and 91,344.40

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Solution

The fourth proportional to 92,219.20, 138,328.80 and 91,344.40 is: 137,016.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,219.20 : 138,328.80 = 91,344.40 : x
  2. Step 2: Convert to fraction form
    92,219.20/138,328.80 = 91,344.40/x
  3. Step 3: Cross multiply
    92,219.20x = 138,328.80 × 91,344.40
  4. Step 4: Simplify right side
    92,219.20x = 12,635,561,238.72
  5. Step 5: Solve for x
    x = 12,635,561,238.72/92,219.20
  6. Step 6: Final answer
    x = 137,016.60

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1.5x scale

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.