Home / 155,949.17-215,209.60-87,965.93

Finding the Fourth Proportional to 155,949.17, 215,209.60 and 87,965.93

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Solution

The fourth proportional to 155,949.17, 215,209.60 and 87,965.93 is: 121,392.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,949.17 : 215,209.60 = 87,965.93 : x
  2. Step 2: Convert to fraction form
    155,949.17/215,209.60 = 87,965.93/x
  3. Step 3: Cross multiply
    155,949.17x = 215,209.60 × 87,965.93
  4. Step 4: Simplify right side
    155,949.17x = 18,931,112,927.04
  5. Step 5: Solve for x
    x = 18,931,112,927.04/155,949.17
  6. Step 6: Final answer
    x = 121,392.85

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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.