Home / 105,065.61-144,987.68-57,318.95

Finding the Fourth Proportional to 105,065.61, 144,987.68 and 57,318.95

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Solution

The fourth proportional to 105,065.61, 144,987.68 and 57,318.95 is: 79,098.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,065.61 : 144,987.68 = 57,318.95 : x
  2. Step 2: Convert to fraction form
    105,065.61/144,987.68 = 57,318.95/x
  3. Step 3: Cross multiply
    105,065.61x = 144,987.68 × 57,318.95
  4. Step 4: Simplify right side
    105,065.61x = 8,310,541,580.54
  5. Step 5: Solve for x
    x = 8,310,541,580.54/105,065.61
  6. Step 6: Final answer
    x = 79,098.59

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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.