Home / 142,837.71-197,118-78,313.02

Finding the Fourth Proportional to 142,837.71, 197,118 and 78,313.02

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Solution

The fourth proportional to 142,837.71, 197,118 and 78,313.02 is: 108,073.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,837.71 : 197,118 = 78,313.02 : x
  2. Step 2: Convert to fraction form
    142,837.71/197,118 = 78,313.02/x
  3. Step 3: Cross multiply
    142,837.71x = 197,118 × 78,313.02
  4. Step 4: Simplify right side
    142,837.71x = 15,436,905,876.36
  5. Step 5: Solve for x
    x = 15,436,905,876.36/142,837.71
  6. Step 6: Final answer
    x = 108,073.04

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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.