Home / 109,161.24-150,630.30-61,431

Finding the Fourth Proportional to 109,161.24, 150,630.30 and 61,431

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Solution

The fourth proportional to 109,161.24, 150,630.30 and 61,431 is: 84,767.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,161.24 : 150,630.30 = 61,431 : x
  2. Step 2: Convert to fraction form
    109,161.24/150,630.30 = 61,431/x
  3. Step 3: Cross multiply
    109,161.24x = 150,630.30 × 61,431
  4. Step 4: Simplify right side
    109,161.24x = 9,253,369,959.30
  5. Step 5: Solve for x
    x = 9,253,369,959.30/109,161.24
  6. Step 6: Final answer
    x = 84,767.91

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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.