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Finding the Fourth Proportional to 156,915.40, 235,373.10 and 137,232.40

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Solution

The fourth proportional to 156,915.40, 235,373.10 and 137,232.40 is: 205,848.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,915.40 : 235,373.10 = 137,232.40 : x
  2. Step 2: Convert to fraction form
    156,915.40/235,373.10 = 137,232.40/x
  3. Step 3: Cross multiply
    156,915.40x = 235,373.10 × 137,232.40
  4. Step 4: Simplify right side
    156,915.40x = 32,300,815,408.44
  5. Step 5: Solve for x
    x = 32,300,815,408.44/156,915.40
  6. Step 6: Final answer
    x = 205,848.60

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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.