Home / 143,370.28-197,856.08-78,844.40

Finding the Fourth Proportional to 143,370.28, 197,856.08 and 78,844.40

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Solution

The fourth proportional to 143,370.28, 197,856.08 and 78,844.40 is: 108,808.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,370.28 : 197,856.08 = 78,844.40 : x
  2. Step 2: Convert to fraction form
    143,370.28/197,856.08 = 78,844.40/x
  3. Step 3: Cross multiply
    143,370.28x = 197,856.08 × 78,844.40
  4. Step 4: Simplify right side
    143,370.28x = 15,599,843,913.95
  5. Step 5: Solve for x
    x = 15,599,843,913.95/143,370.28
  6. Step 6: Final answer
    x = 108,808.07

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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.