Home / 138,832.24-191,587.68-75,168.72

Finding the Fourth Proportional to 138,832.24, 191,587.68 and 75,168.72

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Solution

The fourth proportional to 138,832.24, 191,587.68 and 75,168.72 is: 103,732.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,832.24 : 191,587.68 = 75,168.72 : x
  2. Step 2: Convert to fraction form
    138,832.24/191,587.68 = 75,168.72/x
  3. Step 3: Cross multiply
    138,832.24x = 191,587.68 × 75,168.72
  4. Step 4: Simplify right side
    138,832.24x = 14,401,400,673.37
  5. Step 5: Solve for x
    x = 14,401,400,673.37/138,832.24
  6. Step 6: Final answer
    x = 103,732.39

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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.