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Finding the Fourth Proportional to 123,967.68, 171,068.40 and 67,378.64

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Solution

The fourth proportional to 123,967.68, 171,068.40 and 67,378.64 is: 92,978.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,967.68 : 171,068.40 = 67,378.64 : x
  2. Step 2: Convert to fraction form
    123,967.68/171,068.40 = 67,378.64/x
  3. Step 3: Cross multiply
    123,967.68x = 171,068.40 × 67,378.64
  4. Step 4: Simplify right side
    123,967.68x = 11,526,356,138.98
  5. Step 5: Solve for x
    x = 11,526,356,138.98/123,967.68
  6. Step 6: Final answer
    x = 92,978.72

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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.