Home / 142,047.84-196,037.10-81,639.57

Finding the Fourth Proportional to 142,047.84, 196,037.10 and 81,639.57

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Solution

The fourth proportional to 142,047.84, 196,037.10 and 81,639.57 is: 112,668.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,047.84 : 196,037.10 = 81,639.57 : x
  2. Step 2: Convert to fraction form
    142,047.84/196,037.10 = 81,639.57/x
  3. Step 3: Cross multiply
    142,047.84x = 196,037.10 × 81,639.57
  4. Step 4: Simplify right side
    142,047.84x = 16,004,384,548.05
  5. Step 5: Solve for x
    x = 16,004,384,548.05/142,047.84
  6. Step 6: Final answer
    x = 112,668.98

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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.