Home / 145,065.76-217,423.68-74,906.80

Finding the Fourth Proportional to 145,065.76, 217,423.68 and 74,906.80

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Solution

The fourth proportional to 145,065.76, 217,423.68 and 74,906.80 is: 112,269.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,065.76 : 217,423.68 = 74,906.80 : x
  2. Step 2: Convert to fraction form
    145,065.76/217,423.68 = 74,906.80/x
  3. Step 3: Cross multiply
    145,065.76x = 217,423.68 × 74,906.80
  4. Step 4: Simplify right side
    145,065.76x = 16,286,512,113.02
  5. Step 5: Solve for x
    x = 16,286,512,113.02/145,065.76
  6. Step 6: Final answer
    x = 112,269.86

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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.