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Finding the Fourth Proportional to 113,771.55, 156,937.10 and 73,509.05

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Solution

The fourth proportional to 113,771.55, 156,937.10 and 73,509.05 is: 101,398.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,771.55 : 156,937.10 = 73,509.05 : x
  2. Step 2: Convert to fraction form
    113,771.55/156,937.10 = 73,509.05/x
  3. Step 3: Cross multiply
    113,771.55x = 156,937.10 × 73,509.05
  4. Step 4: Simplify right side
    113,771.55x = 11,536,295,978.52
  5. Step 5: Solve for x
    x = 11,536,295,978.52/113,771.55
  6. Step 6: Final answer
    x = 101,398.78

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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.