Home / 151,343.16-208,835.28-86,809.04

Finding the Fourth Proportional to 151,343.16, 208,835.28 and 86,809.04

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Solution

The fourth proportional to 151,343.16, 208,835.28 and 86,809.04 is: 119,785.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,343.16 : 208,835.28 = 86,809.04 : x
  2. Step 2: Convert to fraction form
    151,343.16/208,835.28 = 86,809.04/x
  3. Step 3: Cross multiply
    151,343.16x = 208,835.28 × 86,809.04
  4. Step 4: Simplify right side
    151,343.16x = 18,128,790,174.93
  5. Step 5: Solve for x
    x = 18,128,790,174.93/151,343.16
  6. Step 6: Final answer
    x = 119,785.99

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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.