Home / 142,837.60-197,049.62-100,421.14

Finding the Fourth Proportional to 142,837.60, 197,049.62 and 100,421.14

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Solution

The fourth proportional to 142,837.60, 197,049.62 and 100,421.14 is: 138,534.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,837.60 : 197,049.62 = 100,421.14 : x
  2. Step 2: Convert to fraction form
    142,837.60/197,049.62 = 100,421.14/x
  3. Step 3: Cross multiply
    142,837.60x = 197,049.62 × 100,421.14
  4. Step 4: Simplify right side
    142,837.60x = 19,787,947,476.97
  5. Step 5: Solve for x
    x = 19,787,947,476.97/142,837.60
  6. Step 6: Final answer
    x = 138,534.58

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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.