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Finding the Fourth Proportional to 170,887.73, 256,108.64 and 123,661.90

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Solution

The fourth proportional to 170,887.73, 256,108.64 and 123,661.90 is: 185,331.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,887.73 : 256,108.64 = 123,661.90 : x
  2. Step 2: Convert to fraction form
    170,887.73/256,108.64 = 123,661.90/x
  3. Step 3: Cross multiply
    170,887.73x = 256,108.64 × 123,661.90
  4. Step 4: Simplify right side
    170,887.73x = 31,670,879,748.27
  5. Step 5: Solve for x
    x = 31,670,879,748.27/170,887.73
  6. Step 6: Final answer
    x = 185,331.50

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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.