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Finding the Fourth Proportional to 132,866.40, 199,299.60 and 85,864.80

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Solution

The fourth proportional to 132,866.40, 199,299.60 and 85,864.80 is: 128,797.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,866.40 : 199,299.60 = 85,864.80 : x
  2. Step 2: Convert to fraction form
    132,866.40/199,299.60 = 85,864.80/x
  3. Step 3: Cross multiply
    132,866.40x = 199,299.60 × 85,864.80
  4. Step 4: Simplify right side
    132,866.40x = 17,112,820,294.08
  5. Step 5: Solve for x
    x = 17,112,820,294.08/132,866.40
  6. Step 6: Final answer
    x = 128,797.20

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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.