Home / 142,239.06-196,282.65-78,564.54

Finding the Fourth Proportional to 142,239.06, 196,282.65 and 78,564.54

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Solution

The fourth proportional to 142,239.06, 196,282.65 and 78,564.54 is: 108,415.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,239.06 : 196,282.65 = 78,564.54 : x
  2. Step 2: Convert to fraction form
    142,239.06/196,282.65 = 78,564.54/x
  3. Step 3: Cross multiply
    142,239.06x = 196,282.65 × 78,564.54
  4. Step 4: Simplify right side
    142,239.06x = 15,420,856,107.23
  5. Step 5: Solve for x
    x = 15,420,856,107.23/142,239.06
  6. Step 6: Final answer
    x = 108,415.06

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1.5x scale

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.