Home / 111,579.74-153,983.19-61,281.98

Finding the Fourth Proportional to 111,579.74, 153,983.19 and 61,281.98

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Solution

The fourth proportional to 111,579.74, 153,983.19 and 61,281.98 is: 84,570.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,579.74 : 153,983.19 = 61,281.98 : x
  2. Step 2: Convert to fraction form
    111,579.74/153,983.19 = 61,281.98/x
  3. Step 3: Cross multiply
    111,579.74x = 153,983.19 × 61,281.98
  4. Step 4: Simplify right side
    111,579.74x = 9,436,394,769.92
  5. Step 5: Solve for x
    x = 9,436,394,769.92/111,579.74
  6. Step 6: Final answer
    x = 84,570.86

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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.