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Finding the Fourth Proportional to 170,656.25, 255,641.67 and 85,009.14

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Solution

The fourth proportional to 170,656.25, 255,641.67 and 85,009.14 is: 127,343.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,656.25 : 255,641.67 = 85,009.14 : x
  2. Step 2: Convert to fraction form
    170,656.25/255,641.67 = 85,009.14/x
  3. Step 3: Cross multiply
    170,656.25x = 255,641.67 × 85,009.14
  4. Step 4: Simplify right side
    170,656.25x = 21,731,878,514.86
  5. Step 5: Solve for x
    x = 21,731,878,514.86/170,656.25
  6. Step 6: Final answer
    x = 127,343.00

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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.