Home / 137,391.28-189,522.48-80,023.84

Finding the Fourth Proportional to 137,391.28, 189,522.48 and 80,023.84

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Solution

The fourth proportional to 137,391.28, 189,522.48 and 80,023.84 is: 110,387.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,391.28 : 189,522.48 = 80,023.84 : x
  2. Step 2: Convert to fraction form
    137,391.28/189,522.48 = 80,023.84/x
  3. Step 3: Cross multiply
    137,391.28x = 189,522.48 × 80,023.84
  4. Step 4: Simplify right side
    137,391.28x = 15,166,316,615.92
  5. Step 5: Solve for x
    x = 15,166,316,615.92/137,391.28
  6. Step 6: Final answer
    x = 110,387.77

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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.