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Finding the Fourth Proportional to 116,713.80, 175,200.30 and 72,390.60

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Solution

The fourth proportional to 116,713.80, 175,200.30 and 72,390.60 is: 108,666.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,713.80 : 175,200.30 = 72,390.60 : x
  2. Step 2: Convert to fraction form
    116,713.80/175,200.30 = 72,390.60/x
  3. Step 3: Cross multiply
    116,713.80x = 175,200.30 × 72,390.60
  4. Step 4: Simplify right side
    116,713.80x = 12,682,854,837.18
  5. Step 5: Solve for x
    x = 12,682,854,837.18/116,713.80
  6. Step 6: Final answer
    x = 108,666.28

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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.