Home / 103,616.65-155,221.60-53,729.36

Finding the Fourth Proportional to 103,616.65, 155,221.60 and 53,729.36

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Solution

The fourth proportional to 103,616.65, 155,221.60 and 53,729.36 is: 80,488.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,616.65 : 155,221.60 = 53,729.36 : x
  2. Step 2: Convert to fraction form
    103,616.65/155,221.60 = 53,729.36/x
  3. Step 3: Cross multiply
    103,616.65x = 155,221.60 × 53,729.36
  4. Step 4: Simplify right side
    103,616.65x = 8,339,957,226.18
  5. Step 5: Solve for x
    x = 8,339,957,226.18/103,616.65
  6. Step 6: Final answer
    x = 80,488.58

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1.5x scale

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.