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Finding the Fourth Proportional to 154,503.54, 213,139.62 and 97,213.86

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Solution

The fourth proportional to 154,503.54, 213,139.62 and 97,213.86 is: 134,107.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,503.54 : 213,139.62 = 97,213.86 : x
  2. Step 2: Convert to fraction form
    154,503.54/213,139.62 = 97,213.86/x
  3. Step 3: Cross multiply
    154,503.54x = 213,139.62 × 97,213.86
  4. Step 4: Simplify right side
    154,503.54x = 20,720,125,179.13
  5. Step 5: Solve for x
    x = 20,720,125,179.13/154,503.54
  6. Step 6: Final answer
    x = 134,107.77

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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.