Home / 156,638.70-234,958.05-51,432.30

Finding the Fourth Proportional to 156,638.70, 234,958.05 and 51,432.30

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Solution

The fourth proportional to 156,638.70, 234,958.05 and 51,432.30 is: 77,148.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,638.70 : 234,958.05 = 51,432.30 : x
  2. Step 2: Convert to fraction form
    156,638.70/234,958.05 = 51,432.30/x
  3. Step 3: Cross multiply
    156,638.70x = 234,958.05 × 51,432.30
  4. Step 4: Simplify right side
    156,638.70x = 12,084,432,915.02
  5. Step 5: Solve for x
    x = 12,084,432,915.02/156,638.70
  6. Step 6: Final answer
    x = 77,148.45

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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.