Home / 143,246.71-197,685.96-78,718.67

Finding the Fourth Proportional to 143,246.71, 197,685.96 and 78,718.67

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Solution

The fourth proportional to 143,246.71, 197,685.96 and 78,718.67 is: 108,634.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,246.71 : 197,685.96 = 78,718.67 : x
  2. Step 2: Convert to fraction form
    143,246.71/197,685.96 = 78,718.67/x
  3. Step 3: Cross multiply
    143,246.71x = 197,685.96 × 78,718.67
  4. Step 4: Simplify right side
    143,246.71x = 15,561,575,848.87
  5. Step 5: Solve for x
    x = 15,561,575,848.87/143,246.71
  6. Step 6: Final answer
    x = 108,634.79

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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.