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Finding the Fourth Proportional to 207,139.75, 285,850.13 and 116,495.68

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Solution

The fourth proportional to 207,139.75, 285,850.13 and 116,495.68 is: 160,762.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,139.75 : 285,850.13 = 116,495.68 : x
  2. Step 2: Convert to fraction form
    207,139.75/285,850.13 = 116,495.68/x
  3. Step 3: Cross multiply
    207,139.75x = 285,850.13 × 116,495.68
  4. Step 4: Simplify right side
    207,139.75x = 33,300,303,260.71
  5. Step 5: Solve for x
    x = 33,300,303,260.71/207,139.75
  6. Step 6: Final answer
    x = 160,762.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.