Home / 143,384.85-197,870.45-79,718.85

Finding the Fourth Proportional to 143,384.85, 197,870.45 and 79,718.85

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Solution

The fourth proportional to 143,384.85, 197,870.45 and 79,718.85 is: 110,011.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,384.85 : 197,870.45 = 79,718.85 : x
  2. Step 2: Convert to fraction form
    143,384.85/197,870.45 = 79,718.85/x
  3. Step 3: Cross multiply
    143,384.85x = 197,870.45 × 79,718.85
  4. Step 4: Simplify right side
    143,384.85x = 15,774,004,324.39
  5. Step 5: Solve for x
    x = 15,774,004,324.39/143,384.85
  6. Step 6: Final answer
    x = 110,011.65

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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.