Home / 215,109.66-296,730.26-129,045.74

Finding the Fourth Proportional to 215,109.66, 296,730.26 and 129,045.74

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Solution

The fourth proportional to 215,109.66, 296,730.26 and 129,045.74 is: 178,010.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,109.66 : 296,730.26 = 129,045.74 : x
  2. Step 2: Convert to fraction form
    215,109.66/296,730.26 = 129,045.74/x
  3. Step 3: Cross multiply
    215,109.66x = 296,730.26 × 129,045.74
  4. Step 4: Simplify right side
    215,109.66x = 38,291,775,982.09
  5. Step 5: Solve for x
    x = 38,291,775,982.09/215,109.66
  6. Step 6: Final answer
    x = 178,010.49

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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.