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Finding the Fourth Proportional to 122,364.89, 168,865.19 and 68,646.70

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Solution

The fourth proportional to 122,364.89, 168,865.19 and 68,646.70 is: 94,733.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,364.89 : 168,865.19 = 68,646.70 : x
  2. Step 2: Convert to fraction form
    122,364.89/168,865.19 = 68,646.70/x
  3. Step 3: Cross multiply
    122,364.89x = 168,865.19 × 68,646.70
  4. Step 4: Simplify right side
    122,364.89x = 11,592,038,038.37
  5. Step 5: Solve for x
    x = 11,592,038,038.37/122,364.89
  6. Step 6: Final answer
    x = 94,733.37

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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.