Home / 128,282.05-177,029.49-71,693.43

Finding the Fourth Proportional to 128,282.05, 177,029.49 and 71,693.43

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Solution

The fourth proportional to 128,282.05, 177,029.49 and 71,693.43 is: 98,937.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,282.05 : 177,029.49 = 71,693.43 : x
  2. Step 2: Convert to fraction form
    128,282.05/177,029.49 = 71,693.43/x
  3. Step 3: Cross multiply
    128,282.05x = 177,029.49 × 71,693.43
  4. Step 4: Simplify right side
    128,282.05x = 12,691,851,349.25
  5. Step 5: Solve for x
    x = 12,691,851,349.25/128,282.05
  6. Step 6: Final answer
    x = 98,937.08

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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.