Home / 131,579.60-197,272.20-56,638.40

Finding the Fourth Proportional to 131,579.60, 197,272.20 and 56,638.40

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Solution

The fourth proportional to 131,579.60, 197,272.20 and 56,638.40 is: 84,915.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,579.60 : 197,272.20 = 56,638.40 : x
  2. Step 2: Convert to fraction form
    131,579.60/197,272.20 = 56,638.40/x
  3. Step 3: Cross multiply
    131,579.60x = 197,272.20 × 56,638.40
  4. Step 4: Simplify right side
    131,579.60x = 11,173,181,772.48
  5. Step 5: Solve for x
    x = 11,173,181,772.48/131,579.60
  6. Step 6: Final answer
    x = 84,915.76

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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.