Home / 105,215.12-145,200.06-57,471.02

Finding the Fourth Proportional to 105,215.12, 145,200.06 and 57,471.02

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Solution

The fourth proportional to 105,215.12, 145,200.06 and 57,471.02 is: 79,311.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,215.12 : 145,200.06 = 57,471.02 : x
  2. Step 2: Convert to fraction form
    105,215.12/145,200.06 = 57,471.02/x
  3. Step 3: Cross multiply
    105,215.12x = 145,200.06 × 57,471.02
  4. Step 4: Simplify right side
    105,215.12x = 8,344,795,552.26
  5. Step 5: Solve for x
    x = 8,344,795,552.26/105,215.12
  6. Step 6: Final answer
    x = 79,311.75

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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.