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Finding the Fourth Proportional to 113,420.54, 156,520.80 and 61,737.27

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Solution

The fourth proportional to 113,420.54, 156,520.80 and 61,737.27 is: 85,197.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,420.54 : 156,520.80 = 61,737.27 : x
  2. Step 2: Convert to fraction form
    113,420.54/156,520.80 = 61,737.27/x
  3. Step 3: Cross multiply
    113,420.54x = 156,520.80 × 61,737.27
  4. Step 4: Simplify right side
    113,420.54x = 9,663,166,890.22
  5. Step 5: Solve for x
    x = 9,663,166,890.22/113,420.54
  6. Step 6: Final answer
    x = 85,197.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.