Home / 188,210.72-259,719-103,320.56

Finding the Fourth Proportional to 188,210.72, 259,719 and 103,320.56

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Solution

The fourth proportional to 188,210.72, 259,719 and 103,320.56 is: 142,575.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,210.72 : 259,719 = 103,320.56 : x
  2. Step 2: Convert to fraction form
    188,210.72/259,719 = 103,320.56/x
  3. Step 3: Cross multiply
    188,210.72x = 259,719 × 103,320.56
  4. Step 4: Simplify right side
    188,210.72x = 26,834,312,522.64
  5. Step 5: Solve for x
    x = 26,834,312,522.64/188,210.72
  6. Step 6: Final answer
    x = 142,575.90

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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.