Home / 138,831.96-191,587.20-75,169.62

Finding the Fourth Proportional to 138,831.96, 191,587.20 and 75,169.62

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Solution

The fourth proportional to 138,831.96, 191,587.20 and 75,169.62 is: 103,733.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,831.96 : 191,587.20 = 75,169.62 : x
  2. Step 2: Convert to fraction form
    138,831.96/191,587.20 = 75,169.62/x
  3. Step 3: Cross multiply
    138,831.96x = 191,587.20 × 75,169.62
  4. Step 4: Simplify right side
    138,831.96x = 14,401,537,020.86
  5. Step 5: Solve for x
    x = 14,401,537,020.86/138,831.96
  6. Step 6: Final answer
    x = 103,733.59

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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.