Home / 142,898.21-197,208.38-79,236.01

Finding the Fourth Proportional to 142,898.21, 197,208.38 and 79,236.01

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Solution

The fourth proportional to 142,898.21, 197,208.38 and 79,236.01 is: 109,350.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,898.21 : 197,208.38 = 79,236.01 : x
  2. Step 2: Convert to fraction form
    142,898.21/197,208.38 = 79,236.01/x
  3. Step 3: Cross multiply
    142,898.21x = 197,208.38 × 79,236.01
  4. Step 4: Simplify right side
    142,898.21x = 15,626,005,169.76
  5. Step 5: Solve for x
    x = 15,626,005,169.76/142,898.21
  6. Step 6: Final answer
    x = 109,350.60

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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.