Home / 151,437.30-208,906.20-103,736.40

Finding the Fourth Proportional to 151,437.30, 208,906.20 and 103,736.40

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Solution

The fourth proportional to 151,437.30, 208,906.20 and 103,736.40 is: 143,103.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,437.30 : 208,906.20 = 103,736.40 : x
  2. Step 2: Convert to fraction form
    151,437.30/208,906.20 = 103,736.40/x
  3. Step 3: Cross multiply
    151,437.30x = 208,906.20 × 103,736.40
  4. Step 4: Simplify right side
    151,437.30x = 21,671,177,125.68
  5. Step 5: Solve for x
    x = 21,671,177,125.68/151,437.30
  6. Step 6: Final answer
    x = 143,103.30

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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.