Home / 124,728.96-172,126.08-68,141.28

Finding the Fourth Proportional to 124,728.96, 172,126.08 and 68,141.28

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Solution

The fourth proportional to 124,728.96, 172,126.08 and 68,141.28 is: 94,035.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,728.96 : 172,126.08 = 68,141.28 : x
  2. Step 2: Convert to fraction form
    124,728.96/172,126.08 = 68,141.28/x
  3. Step 3: Cross multiply
    124,728.96x = 172,126.08 × 68,141.28
  4. Step 4: Simplify right side
    124,728.96x = 11,728,891,412.58
  5. Step 5: Solve for x
    x = 11,728,891,412.58/124,728.96
  6. Step 6: Final answer
    x = 94,035.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.