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Finding the Fourth Proportional to 207,089.79, 310,945.73 and 118,443.39

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Solution

The fourth proportional to 207,089.79, 310,945.73 and 118,443.39 is: 177,842.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,089.79 : 310,945.73 = 118,443.39 : x
  2. Step 2: Convert to fraction form
    207,089.79/310,945.73 = 118,443.39/x
  3. Step 3: Cross multiply
    207,089.79x = 310,945.73 × 118,443.39
  4. Step 4: Simplify right side
    207,089.79x = 36,829,465,775.01
  5. Step 5: Solve for x
    x = 36,829,465,775.01/207,089.79
  6. Step 6: Final answer
    x = 177,842.98

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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.