Home / 151,343.64-208,835.96-86,809.55

Finding the Fourth Proportional to 151,343.64, 208,835.96 and 86,809.55

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Solution

The fourth proportional to 151,343.64, 208,835.96 and 86,809.55 is: 119,786.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,343.64 : 208,835.96 = 86,809.55 : x
  2. Step 2: Convert to fraction form
    151,343.64/208,835.96 = 86,809.55/x
  3. Step 3: Cross multiply
    151,343.64x = 208,835.96 × 86,809.55
  4. Step 4: Simplify right side
    151,343.64x = 18,128,954,233.19
  5. Step 5: Solve for x
    x = 18,128,954,233.19/151,343.64
  6. Step 6: Final answer
    x = 119,786.69

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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.