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Finding the Fourth Proportional to 128,232.96, 177,027.84 and 88,419.84

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Solution

The fourth proportional to 128,232.96, 177,027.84 and 88,419.84 is: 122,065.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,232.96 : 177,027.84 = 88,419.84 : x
  2. Step 2: Convert to fraction form
    128,232.96/177,027.84 = 88,419.84/x
  3. Step 3: Cross multiply
    128,232.96x = 177,027.84 × 88,419.84
  4. Step 4: Simplify right side
    128,232.96x = 15,652,773,288.35
  5. Step 5: Solve for x
    x = 15,652,773,288.35/128,232.96
  6. Step 6: Final answer
    x = 122,065.13

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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.