Home / 171,360.68-236,803.05-128,845.40

Finding the Fourth Proportional to 171,360.68, 236,803.05 and 128,845.40

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Solution

The fourth proportional to 171,360.68, 236,803.05 and 128,845.40 is: 178,051.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,360.68 : 236,803.05 = 128,845.40 : x
  2. Step 2: Convert to fraction form
    171,360.68/236,803.05 = 128,845.40/x
  3. Step 3: Cross multiply
    171,360.68x = 236,803.05 × 128,845.40
  4. Step 4: Simplify right side
    171,360.68x = 30,510,982,514.45
  5. Step 5: Solve for x
    x = 30,510,982,514.45/171,360.68
  6. Step 6: Final answer
    x = 178,051.25

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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.