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Finding the Fourth Proportional to 155,111.76, 214,054.11 and 88,043.76

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Solution

The fourth proportional to 155,111.76, 214,054.11 and 88,043.76 is: 121,500.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,111.76 : 214,054.11 = 88,043.76 : x
  2. Step 2: Convert to fraction form
    155,111.76/214,054.11 = 88,043.76/x
  3. Step 3: Cross multiply
    155,111.76x = 214,054.11 × 88,043.76
  4. Step 4: Simplify right side
    155,111.76x = 18,846,128,687.85
  5. Step 5: Solve for x
    x = 18,846,128,687.85/155,111.76
  6. Step 6: Final answer
    x = 121,500.32

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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.