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Finding the Fourth Proportional to 156,648, 216,174.48 and 89,581.44

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Solution

The fourth proportional to 156,648, 216,174.48 and 89,581.44 is: 123,622.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,648 : 216,174.48 = 89,581.44 : x
  2. Step 2: Convert to fraction form
    156,648/216,174.48 = 89,581.44/x
  3. Step 3: Cross multiply
    156,648x = 216,174.48 × 89,581.44
  4. Step 4: Simplify right side
    156,648x = 19,365,221,209.65
  5. Step 5: Solve for x
    x = 19,365,221,209.65/156,648
  6. Step 6: Final answer
    x = 123,622.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.