Home / 137,191.40-189,346.02-80,616.68

Finding the Fourth Proportional to 137,191.40, 189,346.02 and 80,616.68

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Solution

The fourth proportional to 137,191.40, 189,346.02 and 80,616.68 is: 111,263.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,191.40 : 189,346.02 = 80,616.68 : x
  2. Step 2: Convert to fraction form
    137,191.40/189,346.02 = 80,616.68/x
  3. Step 3: Cross multiply
    137,191.40x = 189,346.02 × 80,616.68
  4. Step 4: Simplify right side
    137,191.40x = 15,264,447,503.61
  5. Step 5: Solve for x
    x = 15,264,447,503.61/137,191.40
  6. Step 6: Final answer
    x = 111,263.88

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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.