Home / 115,009.70-172,514.55-87,016.10

Finding the Fourth Proportional to 115,009.70, 172,514.55 and 87,016.10

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Solution

The fourth proportional to 115,009.70, 172,514.55 and 87,016.10 is: 130,524.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,009.70 : 172,514.55 = 87,016.10 : x
  2. Step 2: Convert to fraction form
    115,009.70/172,514.55 = 87,016.10/x
  3. Step 3: Cross multiply
    115,009.70x = 172,514.55 × 87,016.10
  4. Step 4: Simplify right side
    115,009.70x = 15,011,543,334.26
  5. Step 5: Solve for x
    x = 15,011,543,334.26/115,009.70
  6. Step 6: Final answer
    x = 130,524.15

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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.