Home / 83,316.20-115,197.54-72,818.60

Finding the Fourth Proportional to 83,316.20, 115,197.54 and 72,818.60

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Solution

The fourth proportional to 83,316.20, 115,197.54 and 72,818.60 is: 100,682.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,316.20 : 115,197.54 = 72,818.60 : x
  2. Step 2: Convert to fraction form
    83,316.20/115,197.54 = 72,818.60/x
  3. Step 3: Cross multiply
    83,316.20x = 115,197.54 × 72,818.60
  4. Step 4: Simplify right side
    83,316.20x = 8,388,523,586.24
  5. Step 5: Solve for x
    x = 8,388,523,586.24/83,316.20
  6. Step 6: Final answer
    x = 100,682.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.