Home / 155,995.20-215,215.65-102,310.02

Finding the Fourth Proportional to 155,995.20, 215,215.65 and 102,310.02

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Solution

The fourth proportional to 155,995.20, 215,215.65 and 102,310.02 is: 141,149.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,995.20 : 215,215.65 = 102,310.02 : x
  2. Step 2: Convert to fraction form
    155,995.20/215,215.65 = 102,310.02/x
  3. Step 3: Cross multiply
    155,995.20x = 215,215.65 × 102,310.02
  4. Step 4: Simplify right side
    155,995.20x = 22,018,717,455.81
  5. Step 5: Solve for x
    x = 22,018,717,455.81/155,995.20
  6. Step 6: Final answer
    x = 141,149.97

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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.