Home / 143,000.33-197,337.81-79,336.76

Finding the Fourth Proportional to 143,000.33, 197,337.81 and 79,336.76

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Solution

The fourth proportional to 143,000.33, 197,337.81 and 79,336.76 is: 109,483.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,000.33 : 197,337.81 = 79,336.76 : x
  2. Step 2: Convert to fraction form
    143,000.33/197,337.81 = 79,336.76/x
  3. Step 3: Cross multiply
    143,000.33x = 197,337.81 × 79,336.76
  4. Step 4: Simplify right side
    143,000.33x = 15,656,141,484.21
  5. Step 5: Solve for x
    x = 15,656,141,484.21/143,000.33
  6. Step 6: Final answer
    x = 109,483.26

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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.