Home / 131,638.94-197,478.90-42,871.79

Finding the Fourth Proportional to 131,638.94, 197,478.90 and 42,871.79

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Solution

The fourth proportional to 131,638.94, 197,478.90 and 42,871.79 is: 64,314.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,638.94 : 197,478.90 = 42,871.79 : x
  2. Step 2: Convert to fraction form
    131,638.94/197,478.90 = 42,871.79/x
  3. Step 3: Cross multiply
    131,638.94x = 197,478.90 × 42,871.79
  4. Step 4: Simplify right side
    131,638.94x = 8,466,274,423.93
  5. Step 5: Solve for x
    x = 8,466,274,423.93/131,638.94
  6. Step 6: Final answer
    x = 64,314.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.