Home / 136,387.91-188,301.47-100,515.44

Finding the Fourth Proportional to 136,387.91, 188,301.47 and 100,515.44

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Solution

The fourth proportional to 136,387.91, 188,301.47 and 100,515.44 is: 138,774.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,387.91 : 188,301.47 = 100,515.44 : x
  2. Step 2: Convert to fraction form
    136,387.91/188,301.47 = 100,515.44/x
  3. Step 3: Cross multiply
    136,387.91x = 188,301.47 × 100,515.44
  4. Step 4: Simplify right side
    136,387.91x = 18,927,205,077.87
  5. Step 5: Solve for x
    x = 18,927,205,077.87/136,387.91
  6. Step 6: Final answer
    x = 138,774.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.