Home / 215,022.48-322,129.13-126,011.58

Finding the Fourth Proportional to 215,022.48, 322,129.13 and 126,011.58

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Solution

The fourth proportional to 215,022.48, 322,129.13 and 126,011.58 is: 188,780.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,022.48 : 322,129.13 = 126,011.58 : x
  2. Step 2: Convert to fraction form
    215,022.48/322,129.13 = 126,011.58/x
  3. Step 3: Cross multiply
    215,022.48x = 322,129.13 × 126,011.58
  4. Step 4: Simplify right side
    215,022.48x = 40,592,000,005.27
  5. Step 5: Solve for x
    x = 40,592,000,005.27/215,022.48
  6. Step 6: Final answer
    x = 188,780.26

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1.5x scale

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.