Home / 145,218.10-217,535.55-82,815.70

Finding the Fourth Proportional to 145,218.10, 217,535.55 and 82,815.70

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Solution

The fourth proportional to 145,218.10, 217,535.55 and 82,815.70 is: 124,057.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,218.10 : 217,535.55 = 82,815.70 : x
  2. Step 2: Convert to fraction form
    145,218.10/217,535.55 = 82,815.70/x
  3. Step 3: Cross multiply
    145,218.10x = 217,535.55 × 82,815.70
  4. Step 4: Simplify right side
    145,218.10x = 18,015,358,848.14
  5. Step 5: Solve for x
    x = 18,015,358,848.14/145,218.10
  6. Step 6: Final answer
    x = 124,057.25

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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.