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Finding the Fourth Proportional to 207,185.94, 285,813.09 and 130,799.70

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Solution

The fourth proportional to 207,185.94, 285,813.09 and 130,799.70 is: 180,438.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,185.94 : 285,813.09 = 130,799.70 : x
  2. Step 2: Convert to fraction form
    207,185.94/285,813.09 = 130,799.70/x
  3. Step 3: Cross multiply
    207,185.94x = 285,813.09 × 130,799.70
  4. Step 4: Simplify right side
    207,185.94x = 37,384,266,428.07
  5. Step 5: Solve for x
    x = 37,384,266,428.07/207,185.94
  6. Step 6: Final answer
    x = 180,438.24

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1.5x scale

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.