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Finding the Fourth Proportional to 153,451.54, 211,759.86 and 85,468.30

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Solution

The fourth proportional to 153,451.54, 211,759.86 and 85,468.30 is: 117,944.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,451.54 : 211,759.86 = 85,468.30 : x
  2. Step 2: Convert to fraction form
    153,451.54/211,759.86 = 85,468.30/x
  3. Step 3: Cross multiply
    153,451.54x = 211,759.86 × 85,468.30
  4. Step 4: Simplify right side
    153,451.54x = 18,098,755,866.81
  5. Step 5: Solve for x
    x = 18,098,755,866.81/153,451.54
  6. Step 6: Final answer
    x = 117,944.44

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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.