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Finding the Fourth Proportional to 131,630.80, 197,057.40 and 87,307.60

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Solution

The fourth proportional to 131,630.80, 197,057.40 and 87,307.60 is: 130,703.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,630.80 : 197,057.40 = 87,307.60 : x
  2. Step 2: Convert to fraction form
    131,630.80/197,057.40 = 87,307.60/x
  3. Step 3: Cross multiply
    131,630.80x = 197,057.40 × 87,307.60
  4. Step 4: Simplify right side
    131,630.80x = 17,204,608,656.24
  5. Step 5: Solve for x
    x = 17,204,608,656.24/131,630.80
  6. Step 6: Final answer
    x = 130,703.52

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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.