Home / 156,472.40-234,270.12-81,428.96

Finding the Fourth Proportional to 156,472.40, 234,270.12 and 81,428.96

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Solution

The fourth proportional to 156,472.40, 234,270.12 and 81,428.96 is: 121,915.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,472.40 : 234,270.12 = 81,428.96 : x
  2. Step 2: Convert to fraction form
    156,472.40/234,270.12 = 81,428.96/x
  3. Step 3: Cross multiply
    156,472.40x = 234,270.12 × 81,428.96
  4. Step 4: Simplify right side
    156,472.40x = 19,076,372,230.68
  5. Step 5: Solve for x
    x = 19,076,372,230.68/156,472.40
  6. Step 6: Final answer
    x = 121,915.25

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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.