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Finding the Fourth Proportional to 137,540.62, 189,888.87 and 89,873.74

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Solution

The fourth proportional to 137,540.62, 189,888.87 and 89,873.74 is: 124,079.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,540.62 : 189,888.87 = 89,873.74 : x
  2. Step 2: Convert to fraction form
    137,540.62/189,888.87 = 89,873.74/x
  3. Step 3: Cross multiply
    137,540.62x = 189,888.87 × 89,873.74
  4. Step 4: Simplify right side
    137,540.62x = 17,066,022,931.27
  5. Step 5: Solve for x
    x = 17,066,022,931.27/137,540.62
  6. Step 6: Final answer
    x = 124,079.87

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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.