Home / 143,031.20-197,383.38-79,369.16

Finding the Fourth Proportional to 143,031.20, 197,383.38 and 79,369.16

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Solution

The fourth proportional to 143,031.20, 197,383.38 and 79,369.16 is: 109,529.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,031.20 : 197,383.38 = 79,369.16 : x
  2. Step 2: Convert to fraction form
    143,031.20/197,383.38 = 79,369.16/x
  3. Step 3: Cross multiply
    143,031.20x = 197,383.38 × 79,369.16
  4. Step 4: Simplify right side
    143,031.20x = 15,666,153,068.56
  5. Step 5: Solve for x
    x = 15,666,153,068.56/143,031.20
  6. Step 6: Final answer
    x = 109,529.62

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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.