Home / 128,944.24-177,938.40-71,586.04

Finding the Fourth Proportional to 128,944.24, 177,938.40 and 71,586.04

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Solution

The fourth proportional to 128,944.24, 177,938.40 and 71,586.04 is: 98,786.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,944.24 : 177,938.40 = 71,586.04 : x
  2. Step 2: Convert to fraction form
    128,944.24/177,938.40 = 71,586.04/x
  3. Step 3: Cross multiply
    128,944.24x = 177,938.40 × 71,586.04
  4. Step 4: Simplify right side
    128,944.24x = 12,737,905,419.94
  5. Step 5: Solve for x
    x = 12,737,905,419.94/128,944.24
  6. Step 6: Final answer
    x = 98,786.15

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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.