Home / 157,786.02-217,743.62-86,166.05

Finding the Fourth Proportional to 157,786.02, 217,743.62 and 86,166.05

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Solution

The fourth proportional to 157,786.02, 217,743.62 and 86,166.05 is: 118,908.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,786.02 : 217,743.62 = 86,166.05 : x
  2. Step 2: Convert to fraction form
    157,786.02/217,743.62 = 86,166.05/x
  3. Step 3: Cross multiply
    157,786.02x = 217,743.62 × 86,166.05
  4. Step 4: Simplify right side
    157,786.02x = 18,762,106,128.55
  5. Step 5: Solve for x
    x = 18,762,106,128.55/157,786.02
  6. Step 6: Final answer
    x = 118,908.55

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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.