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Finding the Fourth Proportional to 116,120.40, 173,921.40 and 89,617.20

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Solution

The fourth proportional to 116,120.40, 173,921.40 and 89,617.20 is: 134,225.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,120.40 : 173,921.40 = 89,617.20 : x
  2. Step 2: Convert to fraction form
    116,120.40/173,921.40 = 89,617.20/x
  3. Step 3: Cross multiply
    116,120.40x = 173,921.40 × 89,617.20
  4. Step 4: Simplify right side
    116,120.40x = 15,586,348,888.08
  5. Step 5: Solve for x
    x = 15,586,348,888.08/116,120.40
  6. Step 6: Final answer
    x = 134,225.76

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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.