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Finding the Fourth Proportional to 117,133.88, 175,516.86 and 90,545

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Solution

The fourth proportional to 117,133.88, 175,516.86 and 90,545 is: 135,675.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,133.88 : 175,516.86 = 90,545 : x
  2. Step 2: Convert to fraction form
    117,133.88/175,516.86 = 90,545/x
  3. Step 3: Cross multiply
    117,133.88x = 175,516.86 × 90,545
  4. Step 4: Simplify right side
    117,133.88x = 15,892,174,088.70
  5. Step 5: Solve for x
    x = 15,892,174,088.70/117,133.88
  6. Step 6: Final answer
    x = 135,675.30

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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.