Home / 125,741.80-188,831.40-121,805.20

Finding the Fourth Proportional to 125,741.80, 188,831.40 and 121,805.20

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Solution

The fourth proportional to 125,741.80, 188,831.40 and 121,805.20 is: 182,919.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,741.80 : 188,831.40 = 121,805.20 : x
  2. Step 2: Convert to fraction form
    125,741.80/188,831.40 = 121,805.20/x
  3. Step 3: Cross multiply
    125,741.80x = 188,831.40 × 121,805.20
  4. Step 4: Simplify right side
    125,741.80x = 23,000,646,443.28
  5. Step 5: Solve for x
    x = 23,000,646,443.28/125,741.80
  6. Step 6: Final answer
    x = 182,919.65

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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.