Home / 109,243.12-150,769.86-61,505.80

Finding the Fourth Proportional to 109,243.12, 150,769.86 and 61,505.80

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Solution

The fourth proportional to 109,243.12, 150,769.86 and 61,505.80 is: 84,886.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,243.12 : 150,769.86 = 61,505.80 : x
  2. Step 2: Convert to fraction form
    109,243.12/150,769.86 = 61,505.80/x
  3. Step 3: Cross multiply
    109,243.12x = 150,769.86 × 61,505.80
  4. Step 4: Simplify right side
    109,243.12x = 9,273,220,855.19
  5. Step 5: Solve for x
    x = 9,273,220,855.19/109,243.12
  6. Step 6: Final answer
    x = 84,886.09

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1.5x scale

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.