Home / 115,215.04-172,836.96-45,085.28

Finding the Fourth Proportional to 115,215.04, 172,836.96 and 45,085.28

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Solution

The fourth proportional to 115,215.04, 172,836.96 and 45,085.28 is: 67,633.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,215.04 : 172,836.96 = 45,085.28 : x
  2. Step 2: Convert to fraction form
    115,215.04/172,836.96 = 45,085.28/x
  3. Step 3: Cross multiply
    115,215.04x = 172,836.96 × 45,085.28
  4. Step 4: Simplify right side
    115,215.04x = 7,792,402,735.95
  5. Step 5: Solve for x
    x = 7,792,402,735.95/115,215.04
  6. Step 6: Final answer
    x = 67,633.55

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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.