Home / 125,743.80-188,834.40-121,807.20

Finding the Fourth Proportional to 125,743.80, 188,834.40 and 121,807.20

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Solution

The fourth proportional to 125,743.80, 188,834.40 and 121,807.20 is: 182,922.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,743.80 : 188,834.40 = 121,807.20 : x
  2. Step 2: Convert to fraction form
    125,743.80/188,834.40 = 121,807.20/x
  3. Step 3: Cross multiply
    125,743.80x = 188,834.40 × 121,807.20
  4. Step 4: Simplify right side
    125,743.80x = 23,001,389,527.68
  5. Step 5: Solve for x
    x = 23,001,389,527.68/125,743.80
  6. Step 6: Final answer
    x = 182,922.65

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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.