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Finding the Fourth Proportional to 137,956.50, 206,984.70 and 67,885.02

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Solution

The fourth proportional to 137,956.50, 206,984.70 and 67,885.02 is: 101,852.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,956.50 : 206,984.70 = 67,885.02 : x
  2. Step 2: Convert to fraction form
    137,956.50/206,984.70 = 67,885.02/x
  3. Step 3: Cross multiply
    137,956.50x = 206,984.70 × 67,885.02
  4. Step 4: Simplify right side
    137,956.50x = 14,051,160,499.19
  5. Step 5: Solve for x
    x = 14,051,160,499.19/137,956.50
  6. Step 6: Final answer
    x = 101,852.11

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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.