Home / 128,249.04-176,976.72-71,649.52

Finding the Fourth Proportional to 128,249.04, 176,976.72 and 71,649.52

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Solution

The fourth proportional to 128,249.04, 176,976.72 and 71,649.52 is: 98,872.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,249.04 : 176,976.72 = 71,649.52 : x
  2. Step 2: Convert to fraction form
    128,249.04/176,976.72 = 71,649.52/x
  3. Step 3: Cross multiply
    128,249.04x = 176,976.72 × 71,649.52
  4. Step 4: Simplify right side
    128,249.04x = 12,680,297,039.17
  5. Step 5: Solve for x
    x = 12,680,297,039.17/128,249.04
  6. Step 6: Final answer
    x = 98,872.45

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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.