Home / 142,656.06-196,862.95-78,992.49

Finding the Fourth Proportional to 142,656.06, 196,862.95 and 78,992.49

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Solution

The fourth proportional to 142,656.06, 196,862.95 and 78,992.49 is: 109,008.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,656.06 : 196,862.95 = 78,992.49 : x
  2. Step 2: Convert to fraction form
    142,656.06/196,862.95 = 78,992.49/x
  3. Step 3: Cross multiply
    142,656.06x = 196,862.95 × 78,992.49
  4. Step 4: Simplify right side
    142,656.06x = 15,550,694,609.25
  5. Step 5: Solve for x
    x = 15,550,694,609.25/142,656.06
  6. Step 6: Final answer
    x = 109,008.30

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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.