Home / 155,986.20-215,203.23-102,301.02

Finding the Fourth Proportional to 155,986.20, 215,203.23 and 102,301.02

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Solution

The fourth proportional to 155,986.20, 215,203.23 and 102,301.02 is: 141,137.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,986.20 : 215,203.23 = 102,301.02 : x
  2. Step 2: Convert to fraction form
    155,986.20/215,203.23 = 102,301.02/x
  3. Step 3: Cross multiply
    155,986.20x = 215,203.23 × 102,301.02
  4. Step 4: Simplify right side
    155,986.20x = 22,015,509,936.29
  5. Step 5: Solve for x
    x = 22,015,509,936.29/155,986.20
  6. Step 6: Final answer
    x = 141,137.55

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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.