Home / 157,940.10-217,954.10-86,320.63

Finding the Fourth Proportional to 157,940.10, 217,954.10 and 86,320.63

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Solution

The fourth proportional to 157,940.10, 217,954.10 and 86,320.63 is: 119,120.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,940.10 : 217,954.10 = 86,320.63 : x
  2. Step 2: Convert to fraction form
    157,940.10/217,954.10 = 86,320.63/x
  3. Step 3: Cross multiply
    157,940.10x = 217,954.10 × 86,320.63
  4. Step 4: Simplify right side
    157,940.10x = 18,813,935,007.28
  5. Step 5: Solve for x
    x = 18,813,935,007.28/157,940.10
  6. Step 6: Final answer
    x = 119,120.70

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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.