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Finding the Fourth Proportional to 123,897.30, 170,969.85 and 67,307.46

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Solution

The fourth proportional to 123,897.30, 170,969.85 and 67,307.46 is: 92,879.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,897.30 : 170,969.85 = 67,307.46 : x
  2. Step 2: Convert to fraction form
    123,897.30/170,969.85 = 67,307.46/x
  3. Step 3: Cross multiply
    123,897.30x = 170,969.85 × 67,307.46
  4. Step 4: Simplify right side
    123,897.30x = 11,507,546,340.08
  5. Step 5: Solve for x
    x = 11,507,546,340.08/123,897.30
  6. Step 6: Final answer
    x = 92,879.72

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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.