Home / 158,904.06-219,281.70-87,279.81

Finding the Fourth Proportional to 158,904.06, 219,281.70 and 87,279.81

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Solution

The fourth proportional to 158,904.06, 219,281.70 and 87,279.81 is: 120,442.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,904.06 : 219,281.70 = 87,279.81 : x
  2. Step 2: Convert to fraction form
    158,904.06/219,281.70 = 87,279.81/x
  3. Step 3: Cross multiply
    158,904.06x = 219,281.70 × 87,279.81
  4. Step 4: Simplify right side
    158,904.06x = 19,138,865,112.48
  5. Step 5: Solve for x
    x = 19,138,865,112.48/158,904.06
  6. Step 6: Final answer
    x = 120,442.90

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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.