Home / 154,401.30-231,429.15-65,639.70

Finding the Fourth Proportional to 154,401.30, 231,429.15 and 65,639.70

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Solution

The fourth proportional to 154,401.30, 231,429.15 and 65,639.70 is: 98,386.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,401.30 : 231,429.15 = 65,639.70 : x
  2. Step 2: Convert to fraction form
    154,401.30/231,429.15 = 65,639.70/x
  3. Step 3: Cross multiply
    154,401.30x = 231,429.15 × 65,639.70
  4. Step 4: Simplify right side
    154,401.30x = 15,190,939,977.26
  5. Step 5: Solve for x
    x = 15,190,939,977.26/154,401.30
  6. Step 6: Final answer
    x = 98,386.09

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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.