Home / 137,023.59-189,116.61-79,680.66

Finding the Fourth Proportional to 137,023.59, 189,116.61 and 79,680.66

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Solution

The fourth proportional to 137,023.59, 189,116.61 and 79,680.66 is: 109,973.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,023.59 : 189,116.61 = 79,680.66 : x
  2. Step 2: Convert to fraction form
    137,023.59/189,116.61 = 79,680.66/x
  3. Step 3: Cross multiply
    137,023.59x = 189,116.61 × 79,680.66
  4. Step 4: Simplify right side
    137,023.59x = 15,068,936,301.76
  5. Step 5: Solve for x
    x = 15,068,936,301.76/137,023.59
  6. Step 6: Final answer
    x = 109,973.30

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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.