Home / 142,259.42-196,315.44-78,601.52

Finding the Fourth Proportional to 142,259.42, 196,315.44 and 78,601.52

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Solution

The fourth proportional to 142,259.42, 196,315.44 and 78,601.52 is: 108,468.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,259.42 : 196,315.44 = 78,601.52 : x
  2. Step 2: Convert to fraction form
    142,259.42/196,315.44 = 78,601.52/x
  3. Step 3: Cross multiply
    142,259.42x = 196,315.44 × 78,601.52
  4. Step 4: Simplify right side
    142,259.42x = 15,430,691,983.47
  5. Step 5: Solve for x
    x = 15,430,691,983.47/142,259.42
  6. Step 6: Final answer
    x = 108,468.68

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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.