Home / 136,831.20-188,827.16-76,401.75

Finding the Fourth Proportional to 136,831.20, 188,827.16 and 76,401.75

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Solution

The fourth proportional to 136,831.20, 188,827.16 and 76,401.75 is: 105,434.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,831.20 : 188,827.16 = 76,401.75 : x
  2. Step 2: Convert to fraction form
    136,831.20/188,827.16 = 76,401.75/x
  3. Step 3: Cross multiply
    136,831.20x = 188,827.16 × 76,401.75
  4. Step 4: Simplify right side
    136,831.20x = 14,426,725,471.53
  5. Step 5: Solve for x
    x = 14,426,725,471.53/136,831.20
  6. Step 6: Final answer
    x = 105,434.47

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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.