Home / 155,516.85-214,502.69-103,807.87

Finding the Fourth Proportional to 155,516.85, 214,502.69 and 103,807.87

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Solution

The fourth proportional to 155,516.85, 214,502.69 and 103,807.87 is: 143,181.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,516.85 : 214,502.69 = 103,807.87 : x
  2. Step 2: Convert to fraction form
    155,516.85/214,502.69 = 103,807.87/x
  3. Step 3: Cross multiply
    155,516.85x = 214,502.69 × 103,807.87
  4. Step 4: Simplify right side
    155,516.85x = 22,267,067,081.43
  5. Step 5: Solve for x
    x = 22,267,067,081.43/155,516.85
  6. Step 6: Final answer
    x = 143,181.06

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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.