Home / 142,655.90-196,862.73-78,992.33

Finding the Fourth Proportional to 142,655.90, 196,862.73 and 78,992.33

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Solution

The fourth proportional to 142,655.90, 196,862.73 and 78,992.33 is: 109,008.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,655.90 : 196,862.73 = 78,992.33 : x
  2. Step 2: Convert to fraction form
    142,655.90/196,862.73 = 78,992.33/x
  3. Step 3: Cross multiply
    142,655.90x = 196,862.73 × 78,992.33
  4. Step 4: Simplify right side
    142,655.90x = 15,550,645,732.86
  5. Step 5: Solve for x
    x = 15,550,645,732.86/142,655.90
  6. Step 6: Final answer
    x = 109,008.08

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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.