Home / 142,897.47-197,199.68-79,236.33

Finding the Fourth Proportional to 142,897.47, 197,199.68 and 79,236.33

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Solution

The fourth proportional to 142,897.47, 197,199.68 and 79,236.33 is: 109,346.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,897.47 : 197,199.68 = 79,236.33 : x
  2. Step 2: Convert to fraction form
    142,897.47/197,199.68 = 79,236.33/x
  3. Step 3: Cross multiply
    142,897.47x = 197,199.68 × 79,236.33
  4. Step 4: Simplify right side
    142,897.47x = 15,625,378,524.19
  5. Step 5: Solve for x
    x = 15,625,378,524.19/142,897.47
  6. Step 6: Final answer
    x = 109,346.78

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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.