Home / 75,332.20-112,998.30-66,875.80

Finding the Fourth Proportional to 75,332.20, 112,998.30 and 66,875.80

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Solution

The fourth proportional to 75,332.20, 112,998.30 and 66,875.80 is: 100,313.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,332.20 : 112,998.30 = 66,875.80 : x
  2. Step 2: Convert to fraction form
    75,332.20/112,998.30 = 66,875.80/x
  3. Step 3: Cross multiply
    75,332.20x = 112,998.30 × 66,875.80
  4. Step 4: Simplify right side
    75,332.20x = 7,556,851,711.14
  5. Step 5: Solve for x
    x = 7,556,851,711.14/75,332.20
  6. Step 6: Final answer
    x = 100,313.70

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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.