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Finding the Fourth Proportional to 123,385.68, 170,271.72 and 69,670.08

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Solution

The fourth proportional to 123,385.68, 170,271.72 and 69,670.08 is: 96,144.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,385.68 : 170,271.72 = 69,670.08 : x
  2. Step 2: Convert to fraction form
    123,385.68/170,271.72 = 69,670.08/x
  3. Step 3: Cross multiply
    123,385.68x = 170,271.72 × 69,670.08
  4. Step 4: Simplify right side
    123,385.68x = 11,862,844,354.14
  5. Step 5: Solve for x
    x = 11,862,844,354.14/123,385.68
  6. Step 6: Final answer
    x = 96,144.42

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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.