Home / 115,008.20-172,512.30-87,014.60

Finding the Fourth Proportional to 115,008.20, 172,512.30 and 87,014.60

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Solution

The fourth proportional to 115,008.20, 172,512.30 and 87,014.60 is: 130,521.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,008.20 : 172,512.30 = 87,014.60 : x
  2. Step 2: Convert to fraction form
    115,008.20/172,512.30 = 87,014.60/x
  3. Step 3: Cross multiply
    115,008.20x = 172,512.30 × 87,014.60
  4. Step 4: Simplify right side
    115,008.20x = 15,011,088,779.58
  5. Step 5: Solve for x
    x = 15,011,088,779.58/115,008.20
  6. Step 6: Final answer
    x = 130,521.90

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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.