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Finding the Fourth Proportional to 132,833.60, 199,480.80 and 128,686.40

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Solution

The fourth proportional to 132,833.60, 199,480.80 and 128,686.40 is: 193,252.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,833.60 : 199,480.80 = 128,686.40 : x
  2. Step 2: Convert to fraction form
    132,833.60/199,480.80 = 128,686.40/x
  3. Step 3: Cross multiply
    132,833.60x = 199,480.80 × 128,686.40
  4. Step 4: Simplify right side
    132,833.60x = 25,670,466,021.12
  5. Step 5: Solve for x
    x = 25,670,466,021.12/132,833.60
  6. Step 6: Final answer
    x = 193,252.81

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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.