Home / 154,402.16-231,568.26-78,423.68

Finding the Fourth Proportional to 154,402.16, 231,568.26 and 78,423.68

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Solution

The fourth proportional to 154,402.16, 231,568.26 and 78,423.68 is: 117,617.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,402.16 : 231,568.26 = 78,423.68 : x
  2. Step 2: Convert to fraction form
    154,402.16/231,568.26 = 78,423.68/x
  3. Step 3: Cross multiply
    154,402.16x = 231,568.26 × 78,423.68
  4. Step 4: Simplify right side
    154,402.16x = 18,160,435,120.40
  5. Step 5: Solve for x
    x = 18,160,435,120.40/154,402.16
  6. Step 6: Final answer
    x = 117,617.75

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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.