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Finding the Fourth Proportional to 156,722.90, 235,084.35 and 45,914.90

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Solution

The fourth proportional to 156,722.90, 235,084.35 and 45,914.90 is: 68,872.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,722.90 : 235,084.35 = 45,914.90 : x
  2. Step 2: Convert to fraction form
    156,722.90/235,084.35 = 45,914.90/x
  3. Step 3: Cross multiply
    156,722.90x = 235,084.35 × 45,914.90
  4. Step 4: Simplify right side
    156,722.90x = 10,793,874,421.82
  5. Step 5: Solve for x
    x = 10,793,874,421.82/156,722.90
  6. Step 6: Final answer
    x = 68,872.35

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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.