Home / 98,031.60-147,107.88-45,431.28

Finding the Fourth Proportional to 98,031.60, 147,107.88 and 45,431.28

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Solution

The fourth proportional to 98,031.60, 147,107.88 and 45,431.28 is: 68,174.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,031.60 : 147,107.88 = 45,431.28 : x
  2. Step 2: Convert to fraction form
    98,031.60/147,107.88 = 45,431.28/x
  3. Step 3: Cross multiply
    98,031.60x = 147,107.88 × 45,431.28
  4. Step 4: Simplify right side
    98,031.60x = 6,683,299,286.49
  5. Step 5: Solve for x
    x = 6,683,299,286.49/98,031.60
  6. Step 6: Final answer
    x = 68,174.95

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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.