Home / 91,814.10-137,429.55-84,815.70

Finding the Fourth Proportional to 91,814.10, 137,429.55 and 84,815.70

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Solution

The fourth proportional to 91,814.10, 137,429.55 and 84,815.70 is: 126,954.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,814.10 : 137,429.55 = 84,815.70 : x
  2. Step 2: Convert to fraction form
    91,814.10/137,429.55 = 84,815.70/x
  3. Step 3: Cross multiply
    91,814.10x = 137,429.55 × 84,815.70
  4. Step 4: Simplify right side
    91,814.10x = 11,656,183,483.94
  5. Step 5: Solve for x
    x = 11,656,183,483.94/91,814.10
  6. Step 6: Final answer
    x = 126,954.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.