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Finding the Fourth Proportional to 111,750.89, 154,279.76 and 89,017.02

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Solution

The fourth proportional to 111,750.89, 154,279.76 and 89,017.02 is: 122,894.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,750.89 : 154,279.76 = 89,017.02 : x
  2. Step 2: Convert to fraction form
    111,750.89/154,279.76 = 89,017.02/x
  3. Step 3: Cross multiply
    111,750.89x = 154,279.76 × 89,017.02
  4. Step 4: Simplify right side
    111,750.89x = 13,733,524,036.43
  5. Step 5: Solve for x
    x = 13,733,524,036.43/111,750.89
  6. Step 6: Final answer
    x = 122,894.10

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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.