Home / 157,391.17-217,193.48-85,769.65

Finding the Fourth Proportional to 157,391.17, 217,193.48 and 85,769.65

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Solution

The fourth proportional to 157,391.17, 217,193.48 and 85,769.65 is: 118,358.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,391.17 : 217,193.48 = 85,769.65 : x
  2. Step 2: Convert to fraction form
    157,391.17/217,193.48 = 85,769.65/x
  3. Step 3: Cross multiply
    157,391.17x = 217,193.48 × 85,769.65
  4. Step 4: Simplify right side
    157,391.17x = 18,628,608,433.32
  5. Step 5: Solve for x
    x = 18,628,608,433.32/157,391.17
  6. Step 6: Final answer
    x = 118,358.66

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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.