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Finding the Fourth Proportional to 123,634, 185,482.08 and 57,121.20

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Solution

The fourth proportional to 123,634, 185,482.08 and 57,121.20 is: 85,696.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,634 : 185,482.08 = 57,121.20 : x
  2. Step 2: Convert to fraction form
    123,634/185,482.08 = 57,121.20/x
  3. Step 3: Cross multiply
    123,634x = 185,482.08 × 57,121.20
  4. Step 4: Simplify right side
    123,634x = 10,594,958,988.10
  5. Step 5: Solve for x
    x = 10,594,958,988.10/123,634
  6. Step 6: Final answer
    x = 85,696.16

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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.