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Finding the Fourth Proportional to 143,237.82, 197,672.70 and 79,580.70

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Solution

The fourth proportional to 143,237.82, 197,672.70 and 79,580.70 is: 109,823.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,237.82 : 197,672.70 = 79,580.70 : x
  2. Step 2: Convert to fraction form
    143,237.82/197,672.70 = 79,580.70/x
  3. Step 3: Cross multiply
    143,237.82x = 197,672.70 × 79,580.70
  4. Step 4: Simplify right side
    143,237.82x = 15,730,931,836.89
  5. Step 5: Solve for x
    x = 15,730,931,836.89/143,237.82
  6. Step 6: Final answer
    x = 109,823.87

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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.