Home / 151,239.72-208,689.56-100,173.27

Finding the Fourth Proportional to 151,239.72, 208,689.56 and 100,173.27

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Solution

The fourth proportional to 151,239.72, 208,689.56 and 100,173.27 is: 138,225.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,239.72 : 208,689.56 = 100,173.27 : x
  2. Step 2: Convert to fraction form
    151,239.72/208,689.56 = 100,173.27/x
  3. Step 3: Cross multiply
    151,239.72x = 208,689.56 × 100,173.27
  4. Step 4: Simplify right side
    151,239.72x = 20,905,115,640.06
  5. Step 5: Solve for x
    x = 20,905,115,640.06/151,239.72
  6. Step 6: Final answer
    x = 138,225.04

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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.