Home / 154,265.78-212,887.24-86,283.90

Finding the Fourth Proportional to 154,265.78, 212,887.24 and 86,283.90

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Solution

The fourth proportional to 154,265.78, 212,887.24 and 86,283.90 is: 119,072.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,265.78 : 212,887.24 = 86,283.90 : x
  2. Step 2: Convert to fraction form
    154,265.78/212,887.24 = 86,283.90/x
  3. Step 3: Cross multiply
    154,265.78x = 212,887.24 × 86,283.90
  4. Step 4: Simplify right side
    154,265.78x = 18,368,741,111.73
  5. Step 5: Solve for x
    x = 18,368,741,111.73/154,265.78
  6. Step 6: Final answer
    x = 119,072.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.