Home / 124,990.20-172,485.66-68,401.40

Finding the Fourth Proportional to 124,990.20, 172,485.66 and 68,401.40

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Solution

The fourth proportional to 124,990.20, 172,485.66 and 68,401.40 is: 94,393.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,990.20 : 172,485.66 = 68,401.40 : x
  2. Step 2: Convert to fraction form
    124,990.20/172,485.66 = 68,401.40/x
  3. Step 3: Cross multiply
    124,990.20x = 172,485.66 × 68,401.40
  4. Step 4: Simplify right side
    124,990.20x = 11,798,260,623.92
  5. Step 5: Solve for x
    x = 11,798,260,623.92/124,990.20
  6. Step 6: Final answer
    x = 94,393.49

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1.5x scale

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.