Home / 115,050.56-172,421.76-85,225.28

Finding the Fourth Proportional to 115,050.56, 172,421.76 and 85,225.28

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Solution

The fourth proportional to 115,050.56, 172,421.76 and 85,225.28 is: 127,723.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,050.56 : 172,421.76 = 85,225.28 : x
  2. Step 2: Convert to fraction form
    115,050.56/172,421.76 = 85,225.28/x
  3. Step 3: Cross multiply
    115,050.56x = 172,421.76 × 85,225.28
  4. Step 4: Simplify right side
    115,050.56x = 14,694,692,774.09
  5. Step 5: Solve for x
    x = 14,694,692,774.09/115,050.56
  6. Step 6: Final answer
    x = 127,723.78

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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.