Home / 115,013.20-172,417.40-102,571.60

Finding the Fourth Proportional to 115,013.20, 172,417.40 and 102,571.60

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Solution

The fourth proportional to 115,013.20, 172,417.40 and 102,571.60 is: 153,766.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,013.20 : 172,417.40 = 102,571.60 : x
  2. Step 2: Convert to fraction form
    115,013.20/172,417.40 = 102,571.60/x
  3. Step 3: Cross multiply
    115,013.20x = 172,417.40 × 102,571.60
  4. Step 4: Simplify right side
    115,013.20x = 17,685,128,585.84
  5. Step 5: Solve for x
    x = 17,685,128,585.84/115,013.20
  6. Step 6: Final answer
    x = 153,766.08

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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.