Home / 136,569.60-188,467.20-76,147.20

Finding the Fourth Proportional to 136,569.60, 188,467.20 and 76,147.20

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Solution

The fourth proportional to 136,569.60, 188,467.20 and 76,147.20 is: 105,083.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,569.60 : 188,467.20 = 76,147.20 : x
  2. Step 2: Convert to fraction form
    136,569.60/188,467.20 = 76,147.20/x
  3. Step 3: Cross multiply
    136,569.60x = 188,467.20 × 76,147.20
  4. Step 4: Simplify right side
    136,569.60x = 14,351,249,571.84
  5. Step 5: Solve for x
    x = 14,351,249,571.84/136,569.60
  6. Step 6: Final answer
    x = 105,083.78

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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.