Home / 142,555.20-196,723.67-82,125.69

Finding the Fourth Proportional to 142,555.20, 196,723.67 and 82,125.69

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Solution

The fourth proportional to 142,555.20, 196,723.67 and 82,125.69 is: 113,332.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,555.20 : 196,723.67 = 82,125.69 : x
  2. Step 2: Convert to fraction form
    142,555.20/196,723.67 = 82,125.69/x
  3. Step 3: Cross multiply
    142,555.20x = 196,723.67 × 82,125.69
  4. Step 4: Simplify right side
    142,555.20x = 16,156,066,727.45
  5. Step 5: Solve for x
    x = 16,156,066,727.45/142,555.20
  6. Step 6: Final answer
    x = 113,332.01

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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.