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Finding the Fourth Proportional to 170,887.61, 256,108.46 and 123,661.77

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Solution

The fourth proportional to 170,887.61, 256,108.46 and 123,661.77 is: 185,331.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,887.61 : 256,108.46 = 123,661.77 : x
  2. Step 2: Convert to fraction form
    170,887.61/256,108.46 = 123,661.77/x
  3. Step 3: Cross multiply
    170,887.61x = 256,108.46 × 123,661.77
  4. Step 4: Simplify right side
    170,887.61x = 31,670,824,857.27
  5. Step 5: Solve for x
    x = 31,670,824,857.27/170,887.61
  6. Step 6: Final answer
    x = 185,331.32

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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.