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Finding the Fourth Proportional to 113,670.80, 156,865.37 and 65,952.08

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Solution

The fourth proportional to 113,670.80, 156,865.37 and 65,952.08 is: 91,013.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,670.80 : 156,865.37 = 65,952.08 : x
  2. Step 2: Convert to fraction form
    113,670.80/156,865.37 = 65,952.08/x
  3. Step 3: Cross multiply
    113,670.80x = 156,865.37 × 65,952.08
  4. Step 4: Simplify right side
    113,670.80x = 10,345,597,431.47
  5. Step 5: Solve for x
    x = 10,345,597,431.47/113,670.80
  6. Step 6: Final answer
    x = 91,013.68

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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.