Home / 111,488.40-153,763.92-98,031.60

Finding the Fourth Proportional to 111,488.40, 153,763.92 and 98,031.60

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Solution

The fourth proportional to 111,488.40, 153,763.92 and 98,031.60 is: 135,204.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,488.40 : 153,763.92 = 98,031.60 : x
  2. Step 2: Convert to fraction form
    111,488.40/153,763.92 = 98,031.60/x
  3. Step 3: Cross multiply
    111,488.40x = 153,763.92 × 98,031.60
  4. Step 4: Simplify right side
    111,488.40x = 15,073,723,099.87
  5. Step 5: Solve for x
    x = 15,073,723,099.87/111,488.40
  6. Step 6: Final answer
    x = 135,204.41

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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.