Home / 128,263.68-177,003.56-71,675.04

Finding the Fourth Proportional to 128,263.68, 177,003.56 and 71,675.04

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Solution

The fourth proportional to 128,263.68, 177,003.56 and 71,675.04 is: 98,911.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,263.68 : 177,003.56 = 71,675.04 : x
  2. Step 2: Convert to fraction form
    128,263.68/177,003.56 = 71,675.04/x
  3. Step 3: Cross multiply
    128,263.68x = 177,003.56 × 71,675.04
  4. Step 4: Simplify right side
    128,263.68x = 12,686,737,243.14
  5. Step 5: Solve for x
    x = 12,686,737,243.14/128,263.68
  6. Step 6: Final answer
    x = 98,911.38

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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.