Home / 143,176.62-197,447.76-85,807.56

Finding the Fourth Proportional to 143,176.62, 197,447.76 and 85,807.56

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Solution

The fourth proportional to 143,176.62, 197,447.76 and 85,807.56 is: 118,332.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,176.62 : 197,447.76 = 85,807.56 : x
  2. Step 2: Convert to fraction form
    143,176.62/197,447.76 = 85,807.56/x
  3. Step 3: Cross multiply
    143,176.62x = 197,447.76 × 85,807.56
  4. Step 4: Simplify right side
    143,176.62x = 16,942,510,513.07
  5. Step 5: Solve for x
    x = 16,942,510,513.07/143,176.62
  6. Step 6: Final answer
    x = 118,332.94

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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.