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Finding the Fourth Proportional to 96,340.80, 144,511.20 and 86,523.60

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Solution

The fourth proportional to 96,340.80, 144,511.20 and 86,523.60 is: 129,785.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,340.80 : 144,511.20 = 86,523.60 : x
  2. Step 2: Convert to fraction form
    96,340.80/144,511.20 = 86,523.60/x
  3. Step 3: Cross multiply
    96,340.80x = 144,511.20 × 86,523.60
  4. Step 4: Simplify right side
    96,340.80x = 12,503,629,264.32
  5. Step 5: Solve for x
    x = 12,503,629,264.32/96,340.80
  6. Step 6: Final answer
    x = 129,785.40

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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.