Home / 125,831.80-188,524.14-66,708.28

Finding the Fourth Proportional to 125,831.80, 188,524.14 and 66,708.28

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Solution

The fourth proportional to 125,831.80, 188,524.14 and 66,708.28 is: 99,943.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,831.80 : 188,524.14 = 66,708.28 : x
  2. Step 2: Convert to fraction form
    125,831.80/188,524.14 = 66,708.28/x
  3. Step 3: Cross multiply
    125,831.80x = 188,524.14 × 66,708.28
  4. Step 4: Simplify right side
    125,831.80x = 12,576,121,117.88
  5. Step 5: Solve for x
    x = 12,576,121,117.88/125,831.80
  6. Step 6: Final answer
    x = 99,943.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.