Home / 105,065.11-144,986.99-57,318.45

Finding the Fourth Proportional to 105,065.11, 144,986.99 and 57,318.45

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Solution

The fourth proportional to 105,065.11, 144,986.99 and 57,318.45 is: 79,097.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,065.11 : 144,986.99 = 57,318.45 : x
  2. Step 2: Convert to fraction form
    105,065.11/144,986.99 = 57,318.45/x
  3. Step 3: Cross multiply
    105,065.11x = 144,986.99 × 57,318.45
  4. Step 4: Simplify right side
    105,065.11x = 8,310,429,536.97
  5. Step 5: Solve for x
    x = 8,310,429,536.97/105,065.11
  6. Step 6: Final answer
    x = 79,097.90

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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.