Home / 105,921.20-159,458.90-91,457.84

Finding the Fourth Proportional to 105,921.20, 159,458.90 and 91,457.84

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Solution

The fourth proportional to 105,921.20, 159,458.90 and 91,457.84 is: 137,685.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,921.20 : 159,458.90 = 91,457.84 : x
  2. Step 2: Convert to fraction form
    105,921.20/159,458.90 = 91,457.84/x
  3. Step 3: Cross multiply
    105,921.20x = 159,458.90 × 91,457.84
  4. Step 4: Simplify right side
    105,921.20x = 14,583,766,562.78
  5. Step 5: Solve for x
    x = 14,583,766,562.78/105,921.20
  6. Step 6: Final answer
    x = 137,685.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.