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Finding the Fourth Proportional to 176,121.38, 243,047.50 and 100,671.50

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Solution

The fourth proportional to 176,121.38, 243,047.50 and 100,671.50 is: 138,926.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,121.38 : 243,047.50 = 100,671.50 : x
  2. Step 2: Convert to fraction form
    176,121.38/243,047.50 = 100,671.50/x
  3. Step 3: Cross multiply
    176,121.38x = 243,047.50 × 100,671.50
  4. Step 4: Simplify right side
    176,121.38x = 24,467,954,929.33
  5. Step 5: Solve for x
    x = 24,467,954,929.33/176,121.38
  6. Step 6: Final answer
    x = 138,926.66

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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.