Home / 105,065.28-144,989.82-57,318.59

Finding the Fourth Proportional to 105,065.28, 144,989.82 and 57,318.59

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Solution

The fourth proportional to 105,065.28, 144,989.82 and 57,318.59 is: 79,099.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,065.28 : 144,989.82 = 57,318.59 : x
  2. Step 2: Convert to fraction form
    105,065.28/144,989.82 = 57,318.59/x
  3. Step 3: Cross multiply
    105,065.28x = 144,989.82 × 57,318.59
  4. Step 4: Simplify right side
    105,065.28x = 8,310,612,409.23
  5. Step 5: Solve for x
    x = 8,310,612,409.23/105,065.28
  6. Step 6: Final answer
    x = 79,099.51

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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.