Home / 111,301.06-153,605.19-61,009.78

Finding the Fourth Proportional to 111,301.06, 153,605.19 and 61,009.78

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Solution

The fourth proportional to 111,301.06, 153,605.19 and 61,009.78 is: 84,198.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,301.06 : 153,605.19 = 61,009.78 : x
  2. Step 2: Convert to fraction form
    111,301.06/153,605.19 = 61,009.78/x
  3. Step 3: Cross multiply
    111,301.06x = 153,605.19 × 61,009.78
  4. Step 4: Simplify right side
    111,301.06x = 9,371,418,848.76
  5. Step 5: Solve for x
    x = 9,371,418,848.76/111,301.06
  6. Step 6: Final answer
    x = 84,198.83

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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.