Home / 178,000.20-245,217.78-124,187.40

Finding the Fourth Proportional to 178,000.20, 245,217.78 and 124,187.40

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Solution

The fourth proportional to 178,000.20, 245,217.78 and 124,187.40 is: 171,083.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,000.20 : 245,217.78 = 124,187.40 : x
  2. Step 2: Convert to fraction form
    178,000.20/245,217.78 = 124,187.40/x
  3. Step 3: Cross multiply
    178,000.20x = 245,217.78 × 124,187.40
  4. Step 4: Simplify right side
    178,000.20x = 30,452,958,531.97
  5. Step 5: Solve for x
    x = 30,452,958,531.97/178,000.20
  6. Step 6: Final answer
    x = 171,083.84

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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.