Home / 124,763.64-172,178.07-68,178.66

Finding the Fourth Proportional to 124,763.64, 172,178.07 and 68,178.66

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Solution

The fourth proportional to 124,763.64, 172,178.07 and 68,178.66 is: 94,088.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,763.64 : 172,178.07 = 68,178.66 : x
  2. Step 2: Convert to fraction form
    124,763.64/172,178.07 = 68,178.66/x
  3. Step 3: Cross multiply
    124,763.64x = 172,178.07 × 68,178.66
  4. Step 4: Simplify right side
    124,763.64x = 11,738,870,093.99
  5. Step 5: Solve for x
    x = 11,738,870,093.99/124,763.64
  6. Step 6: Final answer
    x = 94,088.87

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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.