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Finding the Fourth Proportional to 124,140.36, 185,880 and 84,774.36

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Solution

The fourth proportional to 124,140.36, 185,880 and 84,774.36 is: 126,935.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,140.36 : 185,880 = 84,774.36 : x
  2. Step 2: Convert to fraction form
    124,140.36/185,880 = 84,774.36/x
  3. Step 3: Cross multiply
    124,140.36x = 185,880 × 84,774.36
  4. Step 4: Simplify right side
    124,140.36x = 15,757,858,036.80
  5. Step 5: Solve for x
    x = 15,757,858,036.80/124,140.36
  6. Step 6: Final answer
    x = 126,935.82

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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.