Home / 115,275.16-172,990.44-40,395.98

Finding the Fourth Proportional to 115,275.16, 172,990.44 and 40,395.98

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Solution

The fourth proportional to 115,275.16, 172,990.44 and 40,395.98 is: 60,621.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,275.16 : 172,990.44 = 40,395.98 : x
  2. Step 2: Convert to fraction form
    115,275.16/172,990.44 = 40,395.98/x
  3. Step 3: Cross multiply
    115,275.16x = 172,990.44 × 40,395.98
  4. Step 4: Simplify right side
    115,275.16x = 6,988,118,354.43
  5. Step 5: Solve for x
    x = 6,988,118,354.43/115,275.16
  6. Step 6: Final answer
    x = 60,621.20

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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.