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Finding the Fourth Proportional to 115,953.80, 173,889.72 and 55,156.90

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Solution

The fourth proportional to 115,953.80, 173,889.72 and 55,156.90 is: 82,715.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,953.80 : 173,889.72 = 55,156.90 : x
  2. Step 2: Convert to fraction form
    115,953.80/173,889.72 = 55,156.90/x
  3. Step 3: Cross multiply
    115,953.80x = 173,889.72 × 55,156.90
  4. Step 4: Simplify right side
    115,953.80x = 9,591,217,897.07
  5. Step 5: Solve for x
    x = 9,591,217,897.07/115,953.80
  6. Step 6: Final answer
    x = 82,715.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.