Home / 157,403.67-217,210.73-85,782.15

Finding the Fourth Proportional to 157,403.67, 217,210.73 and 85,782.15

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Solution

The fourth proportional to 157,403.67, 217,210.73 and 85,782.15 is: 118,375.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,403.67 : 217,210.73 = 85,782.15 : x
  2. Step 2: Convert to fraction form
    157,403.67/217,210.73 = 85,782.15/x
  3. Step 3: Cross multiply
    157,403.67x = 217,210.73 × 85,782.15
  4. Step 4: Simplify right side
    157,403.67x = 18,632,802,993.56
  5. Step 5: Solve for x
    x = 18,632,802,993.56/157,403.67
  6. Step 6: Final answer
    x = 118,375.91

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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.