Home / 142,659.11-196,867.15-78,995.54

Finding the Fourth Proportional to 142,659.11, 196,867.15 and 78,995.54

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Solution

The fourth proportional to 142,659.11, 196,867.15 and 78,995.54 is: 109,012.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,659.11 : 196,867.15 = 78,995.54 : x
  2. Step 2: Convert to fraction form
    142,659.11/196,867.15 = 78,995.54/x
  3. Step 3: Cross multiply
    142,659.11x = 196,867.15 × 78,995.54
  4. Step 4: Simplify right side
    142,659.11x = 15,551,626,822.51
  5. Step 5: Solve for x
    x = 15,551,626,822.51/142,659.11
  6. Step 6: Final answer
    x = 109,012.50

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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.