Home / 158,729.76-219,052.40-87,113.75

Finding the Fourth Proportional to 158,729.76, 219,052.40 and 87,113.75

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Solution

The fourth proportional to 158,729.76, 219,052.40 and 87,113.75 is: 120,219.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,729.76 : 219,052.40 = 87,113.75 : x
  2. Step 2: Convert to fraction form
    158,729.76/219,052.40 = 87,113.75/x
  3. Step 3: Cross multiply
    158,729.76x = 219,052.40 × 87,113.75
  4. Step 4: Simplify right side
    158,729.76x = 19,082,474,479.67
  5. Step 5: Solve for x
    x = 19,082,474,479.67/158,729.76
  6. Step 6: Final answer
    x = 120,219.89

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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.