Home / 155,680.38-214,826.16-87,675.61

Finding the Fourth Proportional to 155,680.38, 214,826.16 and 87,675.61

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Solution

The fourth proportional to 155,680.38, 214,826.16 and 87,675.61 is: 120,985.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,680.38 : 214,826.16 = 87,675.61 : x
  2. Step 2: Convert to fraction form
    155,680.38/214,826.16 = 87,675.61/x
  3. Step 3: Cross multiply
    155,680.38x = 214,826.16 × 87,675.61
  4. Step 4: Simplify right side
    155,680.38x = 18,835,014,621.96
  5. Step 5: Solve for x
    x = 18,835,014,621.96/155,680.38
  6. Step 6: Final answer
    x = 120,985.15

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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.