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Finding the Fourth Proportional to 123,985.17, 171,100.26 and 73,000.17

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Solution

The fourth proportional to 123,985.17, 171,100.26 and 73,000.17 is: 100,740.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,985.17 : 171,100.26 = 73,000.17 : x
  2. Step 2: Convert to fraction form
    123,985.17/171,100.26 = 73,000.17/x
  3. Step 3: Cross multiply
    123,985.17x = 171,100.26 × 73,000.17
  4. Step 4: Simplify right side
    123,985.17x = 12,490,348,067.04
  5. Step 5: Solve for x
    x = 12,490,348,067.04/123,985.17
  6. Step 6: Final answer
    x = 100,740.66

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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.