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Finding the Fourth Proportional to 83,295.20, 124,971.60 and 80,415.20

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Solution

The fourth proportional to 83,295.20, 124,971.60 and 80,415.20 is: 120,650.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,295.20 : 124,971.60 = 80,415.20 : x
  2. Step 2: Convert to fraction form
    83,295.20/124,971.60 = 80,415.20/x
  3. Step 3: Cross multiply
    83,295.20x = 124,971.60 × 80,415.20
  4. Step 4: Simplify right side
    83,295.20x = 10,049,616,208.32
  5. Step 5: Solve for x
    x = 10,049,616,208.32/83,295.20
  6. Step 6: Final answer
    x = 120,650.60

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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.