Home / 142,236.95-196,286.36-78,574.73

Finding the Fourth Proportional to 142,236.95, 196,286.36 and 78,574.73

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Solution

The fourth proportional to 142,236.95, 196,286.36 and 78,574.73 is: 108,432.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,236.95 : 196,286.36 = 78,574.73 : x
  2. Step 2: Convert to fraction form
    142,236.95/196,286.36 = 78,574.73/x
  3. Step 3: Cross multiply
    142,236.95x = 196,286.36 × 78,574.73
  4. Step 4: Simplify right side
    142,236.95x = 15,423,146,365.38
  5. Step 5: Solve for x
    x = 15,423,146,365.38/142,236.95
  6. Step 6: Final answer
    x = 108,432.77

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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.