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Finding the Fourth Proportional to 113,775.30, 156,942.26 and 73,512.80

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Solution

The fourth proportional to 113,775.30, 156,942.26 and 73,512.80 is: 101,403.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,775.30 : 156,942.26 = 73,512.80 : x
  2. Step 2: Convert to fraction form
    113,775.30/156,942.26 = 73,512.80/x
  3. Step 3: Cross multiply
    113,775.30x = 156,942.26 × 73,512.80
  4. Step 4: Simplify right side
    113,775.30x = 11,537,264,970.93
  5. Step 5: Solve for x
    x = 11,537,264,970.93/113,775.30
  6. Step 6: Final answer
    x = 101,403.95

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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.