Home / 98,228.22-147,343.38-78,631.35

Finding the Fourth Proportional to 98,228.22, 147,343.38 and 78,631.35

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Solution

The fourth proportional to 98,228.22, 147,343.38 and 78,631.35 is: 117,947.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,228.22 : 147,343.38 = 78,631.35 : x
  2. Step 2: Convert to fraction form
    98,228.22/147,343.38 = 78,631.35/x
  3. Step 3: Cross multiply
    98,228.22x = 147,343.38 × 78,631.35
  4. Step 4: Simplify right side
    98,228.22x = 11,585,808,882.96
  5. Step 5: Solve for x
    x = 11,585,808,882.96/98,228.22
  6. Step 6: Final answer
    x = 117,947.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.