Home / 138,742.96-191,463.72-75,079.60

Finding the Fourth Proportional to 138,742.96, 191,463.72 and 75,079.60

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Solution

The fourth proportional to 138,742.96, 191,463.72 and 75,079.60 is: 103,609.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,742.96 : 191,463.72 = 75,079.60 : x
  2. Step 2: Convert to fraction form
    138,742.96/191,463.72 = 75,079.60/x
  3. Step 3: Cross multiply
    138,742.96x = 191,463.72 × 75,079.60
  4. Step 4: Simplify right side
    138,742.96x = 14,375,019,512.11
  5. Step 5: Solve for x
    x = 14,375,019,512.11/138,742.96
  6. Step 6: Final answer
    x = 103,609.00

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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.