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Finding the Fourth Proportional to 122,426.40, 168,927.10 and 68,713.68

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Solution

The fourth proportional to 122,426.40, 168,927.10 and 68,713.68 is: 94,812.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,426.40 : 168,927.10 = 68,713.68 : x
  2. Step 2: Convert to fraction form
    122,426.40/168,927.10 = 68,713.68/x
  3. Step 3: Cross multiply
    122,426.40x = 168,927.10 × 68,713.68
  4. Step 4: Simplify right side
    122,426.40x = 11,607,602,692.73
  5. Step 5: Solve for x
    x = 11,607,602,692.73/122,426.40
  6. Step 6: Final answer
    x = 94,812.91

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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.