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Finding the Fourth Proportional to 173,874.40, 260,665.80 and 90,768.40

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Solution

The fourth proportional to 173,874.40, 260,665.80 and 90,768.40 is: 136,076.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,874.40 : 260,665.80 = 90,768.40 : x
  2. Step 2: Convert to fraction form
    173,874.40/260,665.80 = 90,768.40/x
  3. Step 3: Cross multiply
    173,874.40x = 260,665.80 × 90,768.40
  4. Step 4: Simplify right side
    173,874.40x = 23,660,217,600.72
  5. Step 5: Solve for x
    x = 23,660,217,600.72/173,874.40
  6. Step 6: Final answer
    x = 136,076.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.