Home / 138,741.32-191,463.18-75,079.12

Finding the Fourth Proportional to 138,741.32, 191,463.18 and 75,079.12

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Solution

The fourth proportional to 138,741.32, 191,463.18 and 75,079.12 is: 103,609.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,741.32 : 191,463.18 = 75,079.12 : x
  2. Step 2: Convert to fraction form
    138,741.32/191,463.18 = 75,079.12/x
  3. Step 3: Cross multiply
    138,741.32x = 191,463.18 × 75,079.12
  4. Step 4: Simplify right side
    138,741.32x = 14,374,887,066.80
  5. Step 5: Solve for x
    x = 14,374,887,066.80/138,741.32
  6. Step 6: Final answer
    x = 103,609.27

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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.