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Finding the Fourth Proportional to 116,388.81, 174,447.81 and 66,503.88

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Solution

The fourth proportional to 116,388.81, 174,447.81 and 66,503.88 is: 99,678.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,388.81 : 174,447.81 = 66,503.88 : x
  2. Step 2: Convert to fraction form
    116,388.81/174,447.81 = 66,503.88/x
  3. Step 3: Cross multiply
    116,388.81x = 174,447.81 × 66,503.88
  4. Step 4: Simplify right side
    116,388.81x = 11,601,456,222.50
  5. Step 5: Solve for x
    x = 11,601,456,222.50/116,388.81
  6. Step 6: Final answer
    x = 99,678.45

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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.