Home / 201,635.12-278,223.93-115,578.29

Finding the Fourth Proportional to 201,635.12, 278,223.93 and 115,578.29

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Solution

The fourth proportional to 201,635.12, 278,223.93 and 115,578.29 is: 159,479.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,635.12 : 278,223.93 = 115,578.29 : x
  2. Step 2: Convert to fraction form
    201,635.12/278,223.93 = 115,578.29/x
  3. Step 3: Cross multiply
    201,635.12x = 278,223.93 × 115,578.29
  4. Step 4: Simplify right side
    201,635.12x = 32,156,646,762.04
  5. Step 5: Solve for x
    x = 32,156,646,762.04/201,635.12
  6. Step 6: Final answer
    x = 159,479.39

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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.