Home / 142,014.76-195,979.14-78,353.16

Finding the Fourth Proportional to 142,014.76, 195,979.14 and 78,353.16

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Solution

The fourth proportional to 142,014.76, 195,979.14 and 78,353.16 is: 108,126.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,014.76 : 195,979.14 = 78,353.16 : x
  2. Step 2: Convert to fraction form
    142,014.76/195,979.14 = 78,353.16/x
  3. Step 3: Cross multiply
    142,014.76x = 195,979.14 × 78,353.16
  4. Step 4: Simplify right side
    142,014.76x = 15,355,584,913.08
  5. Step 5: Solve for x
    x = 15,355,584,913.08/142,014.76
  6. Step 6: Final answer
    x = 108,126.68

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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.