Home / 142,037.27-196,011.21-78,375.02

Finding the Fourth Proportional to 142,037.27, 196,011.21 and 78,375.02

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Solution

The fourth proportional to 142,037.27, 196,011.21 and 78,375.02 is: 108,157.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,037.27 : 196,011.21 = 78,375.02 : x
  2. Step 2: Convert to fraction form
    142,037.27/196,011.21 = 78,375.02/x
  3. Step 3: Cross multiply
    142,037.27x = 196,011.21 × 78,375.02
  4. Step 4: Simplify right side
    142,037.27x = 15,362,381,523.92
  5. Step 5: Solve for x
    x = 15,362,381,523.92/142,037.27
  6. Step 6: Final answer
    x = 108,157.40

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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.