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Finding the Fourth Proportional to 117,117.88, 175,492.86 and 90,529

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Solution

The fourth proportional to 117,117.88, 175,492.86 and 90,529 is: 135,651.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,117.88 : 175,492.86 = 90,529 : x
  2. Step 2: Convert to fraction form
    117,117.88/175,492.86 = 90,529/x
  3. Step 3: Cross multiply
    117,117.88x = 175,492.86 × 90,529
  4. Step 4: Simplify right side
    117,117.88x = 15,887,193,122.94
  5. Step 5: Solve for x
    x = 15,887,193,122.94/117,117.88
  6. Step 6: Final answer
    x = 135,651.30

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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.