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Finding the Fourth Proportional to 156,915.64, 235,484.61 and 68,195.08

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Solution

The fourth proportional to 156,915.64, 235,484.61 and 68,195.08 is: 102,340.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,915.64 : 235,484.61 = 68,195.08 : x
  2. Step 2: Convert to fraction form
    156,915.64/235,484.61 = 68,195.08/x
  3. Step 3: Cross multiply
    156,915.64x = 235,484.61 × 68,195.08
  4. Step 4: Simplify right side
    156,915.64x = 16,058,891,817.72
  5. Step 5: Solve for x
    x = 16,058,891,817.72/156,915.64
  6. Step 6: Final answer
    x = 102,340.93

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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.