Home / 128,647.04-177,538.56-80,882.24

Finding the Fourth Proportional to 128,647.04, 177,538.56 and 80,882.24

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Solution

The fourth proportional to 128,647.04, 177,538.56 and 80,882.24 is: 111,621.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,647.04 : 177,538.56 = 80,882.24 : x
  2. Step 2: Convert to fraction form
    128,647.04/177,538.56 = 80,882.24/x
  3. Step 3: Cross multiply
    128,647.04x = 177,538.56 × 80,882.24
  4. Step 4: Simplify right side
    128,647.04x = 14,359,716,419.17
  5. Step 5: Solve for x
    x = 14,359,716,419.17/128,647.04
  6. Step 6: Final answer
    x = 111,621.04

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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.