Home / 155,828.78-215,062.65-87,858.84

Finding the Fourth Proportional to 155,828.78, 215,062.65 and 87,858.84

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Solution

The fourth proportional to 155,828.78, 215,062.65 and 87,858.84 is: 121,255.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,828.78 : 215,062.65 = 87,858.84 : x
  2. Step 2: Convert to fraction form
    155,828.78/215,062.65 = 87,858.84/x
  3. Step 3: Cross multiply
    155,828.78x = 215,062.65 × 87,858.84
  4. Step 4: Simplify right side
    155,828.78x = 18,895,154,956.33
  5. Step 5: Solve for x
    x = 18,895,154,956.33/155,828.78
  6. Step 6: Final answer
    x = 121,255.88

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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.