Home / 128,883.29-193,227.69-84,521.21

Finding the Fourth Proportional to 128,883.29, 193,227.69 and 84,521.21

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Solution

The fourth proportional to 128,883.29, 193,227.69 and 84,521.21 is: 126,718.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,883.29 : 193,227.69 = 84,521.21 : x
  2. Step 2: Convert to fraction form
    128,883.29/193,227.69 = 84,521.21/x
  3. Step 3: Cross multiply
    128,883.29x = 193,227.69 × 84,521.21
  4. Step 4: Simplify right side
    128,883.29x = 16,331,838,164.30
  5. Step 5: Solve for x
    x = 16,331,838,164.30/128,883.29
  6. Step 6: Final answer
    x = 126,718.04

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1.5x scale

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.