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Finding the Fourth Proportional to 153,752.53, 212,183.77 and 89,216.90

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Solution

The fourth proportional to 153,752.53, 212,183.77 and 89,216.90 is: 123,122.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,752.53 : 212,183.77 = 89,216.90 : x
  2. Step 2: Convert to fraction form
    153,752.53/212,183.77 = 89,216.90/x
  3. Step 3: Cross multiply
    153,752.53x = 212,183.77 × 89,216.90
  4. Step 4: Simplify right side
    153,752.53x = 18,930,378,189.71
  5. Step 5: Solve for x
    x = 18,930,378,189.71/153,752.53
  6. Step 6: Final answer
    x = 123,122.38

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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.