Home / 115,401.12-172,751.04-103,037.28

Finding the Fourth Proportional to 115,401.12, 172,751.04 and 103,037.28

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Solution

The fourth proportional to 115,401.12, 172,751.04 and 103,037.28 is: 154,242.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,401.12 : 172,751.04 = 103,037.28 : x
  2. Step 2: Convert to fraction form
    115,401.12/172,751.04 = 103,037.28/x
  3. Step 3: Cross multiply
    115,401.12x = 172,751.04 × 103,037.28
  4. Step 4: Simplify right side
    115,401.12x = 17,799,797,278.77
  5. Step 5: Solve for x
    x = 17,799,797,278.77/115,401.12
  6. Step 6: Final answer
    x = 154,242.85

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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.