Home / 115,000.32-172,445.90-40,111.37

Finding the Fourth Proportional to 115,000.32, 172,445.90 and 40,111.37

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Solution

The fourth proportional to 115,000.32, 172,445.90 and 40,111.37 is: 60,148.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,000.32 : 172,445.90 = 40,111.37 : x
  2. Step 2: Convert to fraction form
    115,000.32/172,445.90 = 40,111.37/x
  3. Step 3: Cross multiply
    115,000.32x = 172,445.90 × 40,111.37
  4. Step 4: Simplify right side
    115,000.32x = 6,917,040,437.65
  5. Step 5: Solve for x
    x = 6,917,040,437.65/115,000.32
  6. Step 6: Final answer
    x = 60,148.01

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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.