Home / 155,856.08-215,077.09-87,872.46

Finding the Fourth Proportional to 155,856.08, 215,077.09 and 87,872.46

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Solution

The fourth proportional to 155,856.08, 215,077.09 and 87,872.46 is: 121,261.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,856.08 : 215,077.09 = 87,872.46 : x
  2. Step 2: Convert to fraction form
    155,856.08/215,077.09 = 87,872.46/x
  3. Step 3: Cross multiply
    155,856.08x = 215,077.09 × 87,872.46
  4. Step 4: Simplify right side
    155,856.08x = 18,899,352,548.58
  5. Step 5: Solve for x
    x = 18,899,352,548.58/155,856.08
  6. Step 6: Final answer
    x = 121,261.57

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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.