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Finding the Fourth Proportional to 111,842, 154,343.04 and 61,542.08

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Solution

The fourth proportional to 111,842, 154,343.04 and 61,542.08 is: 84,928.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,842 : 154,343.04 = 61,542.08 : x
  2. Step 2: Convert to fraction form
    111,842/154,343.04 = 61,542.08/x
  3. Step 3: Cross multiply
    111,842x = 154,343.04 × 61,542.08
  4. Step 4: Simplify right side
    111,842x = 9,498,591,715.12
  5. Step 5: Solve for x
    x = 9,498,591,715.12/111,842
  6. Step 6: Final answer
    x = 84,928.66

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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.