Home / 157,929.60-217,942.32-86,310.12

Finding the Fourth Proportional to 157,929.60, 217,942.32 and 86,310.12

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Solution

The fourth proportional to 157,929.60, 217,942.32 and 86,310.12 is: 119,107.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,929.60 : 217,942.32 = 86,310.12 : x
  2. Step 2: Convert to fraction form
    157,929.60/217,942.32 = 86,310.12/x
  3. Step 3: Cross multiply
    157,929.60x = 217,942.32 × 86,310.12
  4. Step 4: Simplify right side
    157,929.60x = 18,810,627,792.28
  5. Step 5: Solve for x
    x = 18,810,627,792.28/157,929.60
  6. Step 6: Final answer
    x = 119,107.68

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1.5x scale

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.