Home / 155,987.20-215,204.61-102,302.02

Finding the Fourth Proportional to 155,987.20, 215,204.61 and 102,302.02

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Solution

The fourth proportional to 155,987.20, 215,204.61 and 102,302.02 is: 141,138.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,987.20 : 215,204.61 = 102,302.02 : x
  2. Step 2: Convert to fraction form
    155,987.20/215,204.61 = 102,302.02/x
  3. Step 3: Cross multiply
    155,987.20x = 215,204.61 × 102,302.02
  4. Step 4: Simplify right side
    155,987.20x = 22,015,866,316.31
  5. Step 5: Solve for x
    x = 22,015,866,316.31/155,987.20
  6. Step 6: Final answer
    x = 141,138.93

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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.