Home / 112,769.28-155,619.57-61,783.02

Finding the Fourth Proportional to 112,769.28, 155,619.57 and 61,783.02

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Solution

The fourth proportional to 112,769.28, 155,619.57 and 61,783.02 is: 85,259.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,769.28 : 155,619.57 = 61,783.02 : x
  2. Step 2: Convert to fraction form
    112,769.28/155,619.57 = 61,783.02/x
  3. Step 3: Cross multiply
    112,769.28x = 155,619.57 × 61,783.02
  4. Step 4: Simplify right side
    112,769.28x = 9,614,647,005.70
  5. Step 5: Solve for x
    x = 9,614,647,005.70/112,769.28
  6. Step 6: Final answer
    x = 85,259.45

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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.