Home / 124,990.08-172,485.76-68,401.28

Finding the Fourth Proportional to 124,990.08, 172,485.76 and 68,401.28

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Solution

The fourth proportional to 124,990.08, 172,485.76 and 68,401.28 is: 94,393.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,990.08 : 172,485.76 = 68,401.28 : x
  2. Step 2: Convert to fraction form
    124,990.08/172,485.76 = 68,401.28/x
  3. Step 3: Cross multiply
    124,990.08x = 172,485.76 × 68,401.28
  4. Step 4: Simplify right side
    124,990.08x = 11,798,246,765.77
  5. Step 5: Solve for x
    x = 11,798,246,765.77/124,990.08
  6. Step 6: Final answer
    x = 94,393.47

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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.