Home / 131,700.20-198,011.10-128,935.40

Finding the Fourth Proportional to 131,700.20, 198,011.10 and 128,935.40

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Solution

The fourth proportional to 131,700.20, 198,011.10 and 128,935.40 is: 193,854.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,700.20 : 198,011.10 = 128,935.40 : x
  2. Step 2: Convert to fraction form
    131,700.20/198,011.10 = 128,935.40/x
  3. Step 3: Cross multiply
    131,700.20x = 198,011.10 × 128,935.40
  4. Step 4: Simplify right side
    131,700.20x = 25,530,640,382.94
  5. Step 5: Solve for x
    x = 25,530,640,382.94/131,700.20
  6. Step 6: Final answer
    x = 193,854.23

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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.