Home / 155,872.09-215,103.35-84,252.11

Finding the Fourth Proportional to 155,872.09, 215,103.35 and 84,252.11

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Solution

The fourth proportional to 155,872.09, 215,103.35 and 84,252.11 is: 116,267.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,872.09 : 215,103.35 = 84,252.11 : x
  2. Step 2: Convert to fraction form
    155,872.09/215,103.35 = 84,252.11/x
  3. Step 3: Cross multiply
    155,872.09x = 215,103.35 × 84,252.11
  4. Step 4: Simplify right side
    155,872.09x = 18,122,911,853.96
  5. Step 5: Solve for x
    x = 18,122,911,853.96/155,872.09
  6. Step 6: Final answer
    x = 116,267.85

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1.5x scale

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.