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Finding the Fourth Proportional to 155,999.91, 215,261.37 and 88,012.92

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Solution

The fourth proportional to 155,999.91, 215,261.37 and 88,012.92 is: 121,447.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,999.91 : 215,261.37 = 88,012.92 : x
  2. Step 2: Convert to fraction form
    155,999.91/215,261.37 = 88,012.92/x
  3. Step 3: Cross multiply
    155,999.91x = 215,261.37 × 88,012.92
  4. Step 4: Simplify right side
    155,999.91x = 18,945,781,333.29
  5. Step 5: Solve for x
    x = 18,945,781,333.29/155,999.91
  6. Step 6: Final answer
    x = 121,447.38

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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.