Home / 142,605.06-196,805.91-81,352.60

Finding the Fourth Proportional to 142,605.06, 196,805.91 and 81,352.60

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Solution

The fourth proportional to 142,605.06, 196,805.91 and 81,352.60 is: 112,272.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,605.06 : 196,805.91 = 81,352.60 : x
  2. Step 2: Convert to fraction form
    142,605.06/196,805.91 = 81,352.60/x
  3. Step 3: Cross multiply
    142,605.06x = 196,805.91 × 81,352.60
  4. Step 4: Simplify right side
    142,605.06x = 16,010,671,489.84
  5. Step 5: Solve for x
    x = 16,010,671,489.84/142,605.06
  6. Step 6: Final answer
    x = 112,272.82

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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.