Home / 105,685.24-145,679.96-80,089.14

Finding the Fourth Proportional to 105,685.24, 145,679.96 and 80,089.14

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Solution

The fourth proportional to 105,685.24, 145,679.96 and 80,089.14 is: 110,397.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,685.24 : 145,679.96 = 80,089.14 : x
  2. Step 2: Convert to fraction form
    105,685.24/145,679.96 = 80,089.14/x
  3. Step 3: Cross multiply
    105,685.24x = 145,679.96 × 80,089.14
  4. Step 4: Simplify right side
    105,685.24x = 11,667,382,311.19
  5. Step 5: Solve for x
    x = 11,667,382,311.19/105,685.24
  6. Step 6: Final answer
    x = 110,397.47

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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.