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Finding the Fourth Proportional to 175,874.16, 243,028.20 and 128,044.48

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Solution

The fourth proportional to 175,874.16, 243,028.20 and 128,044.48 is: 176,935.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,874.16 : 243,028.20 = 128,044.48 : x
  2. Step 2: Convert to fraction form
    175,874.16/243,028.20 = 128,044.48/x
  3. Step 3: Cross multiply
    175,874.16x = 243,028.20 × 128,044.48
  4. Step 4: Simplify right side
    175,874.16x = 31,118,419,494.34
  5. Step 5: Solve for x
    x = 31,118,419,494.34/175,874.16
  6. Step 6: Final answer
    x = 176,935.71

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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.