Home / 125,767.36-188,653.12-100,691.20

Finding the Fourth Proportional to 125,767.36, 188,653.12 and 100,691.20

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Solution

The fourth proportional to 125,767.36, 188,653.12 and 100,691.20 is: 151,038.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,767.36 : 188,653.12 = 100,691.20 : x
  2. Step 2: Convert to fraction form
    125,767.36/188,653.12 = 100,691.20/x
  3. Step 3: Cross multiply
    125,767.36x = 188,653.12 × 100,691.20
  4. Step 4: Simplify right side
    125,767.36x = 18,995,709,036.54
  5. Step 5: Solve for x
    x = 18,995,709,036.54/125,767.36
  6. Step 6: Final answer
    x = 151,038.47

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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.