Home / 155,979.15-215,277.69-88,015.40

Finding the Fourth Proportional to 155,979.15, 215,277.69 and 88,015.40

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Solution

The fourth proportional to 155,979.15, 215,277.69 and 88,015.40 is: 121,476.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,979.15 : 215,277.69 = 88,015.40 : x
  2. Step 2: Convert to fraction form
    155,979.15/215,277.69 = 88,015.40/x
  3. Step 3: Cross multiply
    155,979.15x = 215,277.69 × 88,015.40
  4. Step 4: Simplify right side
    155,979.15x = 18,947,750,920.04
  5. Step 5: Solve for x
    x = 18,947,750,920.04/155,979.15
  6. Step 6: Final answer
    x = 121,476.18

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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.