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Finding the Fourth Proportional to 207,591.81, 286,497.86 and 127,072.54

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Solution

The fourth proportional to 207,591.81, 286,497.86 and 127,072.54 is: 175,373.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,591.81 : 286,497.86 = 127,072.54 : x
  2. Step 2: Convert to fraction form
    207,591.81/286,497.86 = 127,072.54/x
  3. Step 3: Cross multiply
    207,591.81x = 286,497.86 × 127,072.54
  4. Step 4: Simplify right side
    207,591.81x = 36,406,010,139.40
  5. Step 5: Solve for x
    x = 36,406,010,139.40/207,591.81
  6. Step 6: Final answer
    x = 175,373.06

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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.