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Finding the Fourth Proportional to 123,838.34, 170,897.85 and 67,249.71

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Solution

The fourth proportional to 123,838.34, 170,897.85 and 67,249.71 is: 92,805.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,838.34 : 170,897.85 = 67,249.71 : x
  2. Step 2: Convert to fraction form
    123,838.34/170,897.85 = 67,249.71/x
  3. Step 3: Cross multiply
    123,838.34x = 170,897.85 × 67,249.71
  4. Step 4: Simplify right side
    123,838.34x = 11,492,830,852.12
  5. Step 5: Solve for x
    x = 11,492,830,852.12/123,838.34
  6. Step 6: Final answer
    x = 92,805.11

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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.