Home / 131,487.40-197,231.10-47,287.90

Finding the Fourth Proportional to 131,487.40, 197,231.10 and 47,287.90

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Solution

The fourth proportional to 131,487.40, 197,231.10 and 47,287.90 is: 70,931.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,487.40 : 197,231.10 = 47,287.90 : x
  2. Step 2: Convert to fraction form
    131,487.40/197,231.10 = 47,287.90/x
  3. Step 3: Cross multiply
    131,487.40x = 197,231.10 × 47,287.90
  4. Step 4: Simplify right side
    131,487.40x = 9,326,644,533.69
  5. Step 5: Solve for x
    x = 9,326,644,533.69/131,487.40
  6. Step 6: Final answer
    x = 70,931.85

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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.