Home / 157,728.45-217,668.56-86,111.49

Finding the Fourth Proportional to 157,728.45, 217,668.56 and 86,111.49

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Solution

The fourth proportional to 157,728.45, 217,668.56 and 86,111.49 is: 118,835.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,728.45 : 217,668.56 = 86,111.49 : x
  2. Step 2: Convert to fraction form
    157,728.45/217,668.56 = 86,111.49/x
  3. Step 3: Cross multiply
    157,728.45x = 217,668.56 × 86,111.49
  4. Step 4: Simplify right side
    157,728.45x = 18,743,763,597.20
  5. Step 5: Solve for x
    x = 18,743,763,597.20/157,728.45
  6. Step 6: Final answer
    x = 118,835.65

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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.