Home / 142,983.46-197,340.78-79,341.76

Finding the Fourth Proportional to 142,983.46, 197,340.78 and 79,341.76

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Solution

The fourth proportional to 142,983.46, 197,340.78 and 79,341.76 is: 109,504.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,983.46 : 197,340.78 = 79,341.76 : x
  2. Step 2: Convert to fraction form
    142,983.46/197,340.78 = 79,341.76/x
  3. Step 3: Cross multiply
    142,983.46x = 197,340.78 × 79,341.76
  4. Step 4: Simplify right side
    142,983.46x = 15,657,364,804.97
  5. Step 5: Solve for x
    x = 15,657,364,804.97/142,983.46
  6. Step 6: Final answer
    x = 109,504.73

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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.