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Finding the Fourth Proportional to 171,047.88, 256,345.68 and 123,820.80

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Solution

The fourth proportional to 171,047.88, 256,345.68 and 123,820.80 is: 185,567.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,047.88 : 256,345.68 = 123,820.80 : x
  2. Step 2: Convert to fraction form
    171,047.88/256,345.68 = 123,820.80/x
  3. Step 3: Cross multiply
    171,047.88x = 256,345.68 × 123,820.80
  4. Step 4: Simplify right side
    171,047.88x = 31,740,927,174.14
  5. Step 5: Solve for x
    x = 31,740,927,174.14/171,047.88
  6. Step 6: Final answer
    x = 185,567.50

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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.