Home / 115,243.92-172,763.28-45,172.08

Finding the Fourth Proportional to 115,243.92, 172,763.28 and 45,172.08

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Solution

The fourth proportional to 115,243.92, 172,763.28 and 45,172.08 is: 67,717.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,243.92 : 172,763.28 = 45,172.08 : x
  2. Step 2: Convert to fraction form
    115,243.92/172,763.28 = 45,172.08/x
  3. Step 3: Cross multiply
    115,243.92x = 172,763.28 × 45,172.08
  4. Step 4: Simplify right side
    115,243.92x = 7,804,076,705.22
  5. Step 5: Solve for x
    x = 7,804,076,705.22/115,243.92
  6. Step 6: Final answer
    x = 67,717.90

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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.