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Finding the Fourth Proportional to 113,777.80, 156,945.71 and 73,515.30

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Solution

The fourth proportional to 113,777.80, 156,945.71 and 73,515.30 is: 101,407.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,777.80 : 156,945.71 = 73,515.30 : x
  2. Step 2: Convert to fraction form
    113,777.80/156,945.71 = 73,515.30/x
  3. Step 3: Cross multiply
    113,777.80x = 156,945.71 × 73,515.30
  4. Step 4: Simplify right side
    113,777.80x = 11,537,910,954.36
  5. Step 5: Solve for x
    x = 11,537,910,954.36/113,777.80
  6. Step 6: Final answer
    x = 101,407.40

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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.