Home / 142,605.81-196,806.94-81,353.35

Finding the Fourth Proportional to 142,605.81, 196,806.94 and 81,353.35

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Solution

The fourth proportional to 142,605.81, 196,806.94 and 81,353.35 is: 112,273.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,605.81 : 196,806.94 = 81,353.35 : x
  2. Step 2: Convert to fraction form
    142,605.81/196,806.94 = 81,353.35/x
  3. Step 3: Cross multiply
    142,605.81x = 196,806.94 × 81,353.35
  4. Step 4: Simplify right side
    142,605.81x = 16,010,903,872.25
  5. Step 5: Solve for x
    x = 16,010,903,872.25/142,605.81
  6. Step 6: Final answer
    x = 112,273.85

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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.