Home / 80,769.40-121,154.10-25,358.20

Finding the Fourth Proportional to 80,769.40, 121,154.10 and 25,358.20

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Solution

The fourth proportional to 80,769.40, 121,154.10 and 25,358.20 is: 38,037.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,769.40 : 121,154.10 = 25,358.20 : x
  2. Step 2: Convert to fraction form
    80,769.40/121,154.10 = 25,358.20/x
  3. Step 3: Cross multiply
    80,769.40x = 121,154.10 × 25,358.20
  4. Step 4: Simplify right side
    80,769.40x = 3,072,249,898.62
  5. Step 5: Solve for x
    x = 3,072,249,898.62/80,769.40
  6. Step 6: Final answer
    x = 38,037.30

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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.