Home / 125,926.40-188,452.20-115,428.80

Finding the Fourth Proportional to 125,926.40, 188,452.20 and 115,428.80

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Solution

The fourth proportional to 125,926.40, 188,452.20 and 115,428.80 is: 172,742.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,926.40 : 188,452.20 = 115,428.80 : x
  2. Step 2: Convert to fraction form
    125,926.40/188,452.20 = 115,428.80/x
  3. Step 3: Cross multiply
    125,926.40x = 188,452.20 × 115,428.80
  4. Step 4: Simplify right side
    125,926.40x = 21,752,811,303.36
  5. Step 5: Solve for x
    x = 21,752,811,303.36/125,926.40
  6. Step 6: Final answer
    x = 172,742.26

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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.