Home / 81,148.40-111,554.88-69,776.24

Finding the Fourth Proportional to 81,148.40, 111,554.88 and 69,776.24

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Solution

The fourth proportional to 81,148.40, 111,554.88 and 69,776.24 is: 95,921.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,148.40 : 111,554.88 = 69,776.24 : x
  2. Step 2: Convert to fraction form
    81,148.40/111,554.88 = 69,776.24/x
  3. Step 3: Cross multiply
    81,148.40x = 111,554.88 × 69,776.24
  4. Step 4: Simplify right side
    81,148.40x = 7,783,880,080.05
  5. Step 5: Solve for x
    x = 7,783,880,080.05/81,148.40
  6. Step 6: Final answer
    x = 95,921.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.