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Finding the Fourth Proportional to 83,063.80, 124,595.70 and 80,876.80

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Solution

The fourth proportional to 83,063.80, 124,595.70 and 80,876.80 is: 121,315.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,063.80 : 124,595.70 = 80,876.80 : x
  2. Step 2: Convert to fraction form
    83,063.80/124,595.70 = 80,876.80/x
  3. Step 3: Cross multiply
    83,063.80x = 124,595.70 × 80,876.80
  4. Step 4: Simplify right side
    83,063.80x = 10,076,901,509.76
  5. Step 5: Solve for x
    x = 10,076,901,509.76/83,063.80
  6. Step 6: Final answer
    x = 121,315.20

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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.