Home / 160,433.10-221,400.30-87,834.78

Finding the Fourth Proportional to 160,433.10, 221,400.30 and 87,834.78

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Solution

The fourth proportional to 160,433.10, 221,400.30 and 87,834.78 is: 121,213.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,433.10 : 221,400.30 = 87,834.78 : x
  2. Step 2: Convert to fraction form
    160,433.10/221,400.30 = 87,834.78/x
  3. Step 3: Cross multiply
    160,433.10x = 221,400.30 × 87,834.78
  4. Step 4: Simplify right side
    160,433.10x = 19,446,646,642.43
  5. Step 5: Solve for x
    x = 19,446,646,642.43/160,433.10
  6. Step 6: Final answer
    x = 121,213.43

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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.