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Finding the Fourth Proportional to 104,821.80, 157,059.90 and 87,196.20

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Solution

The fourth proportional to 104,821.80, 157,059.90 and 87,196.20 is: 130,650.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,821.80 : 157,059.90 = 87,196.20 : x
  2. Step 2: Convert to fraction form
    104,821.80/157,059.90 = 87,196.20/x
  3. Step 3: Cross multiply
    104,821.80x = 157,059.90 × 87,196.20
  4. Step 4: Simplify right side
    104,821.80x = 13,695,026,452.38
  5. Step 5: Solve for x
    x = 13,695,026,452.38/104,821.80
  6. Step 6: Final answer
    x = 130,650.56

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1.5x scale

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.