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Finding the Fourth Proportional to 122,427.50, 168,966.42 and 68,715.45

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Solution

The fourth proportional to 122,427.50, 168,966.42 and 68,715.45 is: 94,836.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,427.50 : 168,966.42 = 68,715.45 : x
  2. Step 2: Convert to fraction form
    122,427.50/168,966.42 = 68,715.45/x
  3. Step 3: Cross multiply
    122,427.50x = 168,966.42 × 68,715.45
  4. Step 4: Simplify right side
    122,427.50x = 11,610,603,585.19
  5. Step 5: Solve for x
    x = 11,610,603,585.19/122,427.50
  6. Step 6: Final answer
    x = 94,836.57

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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.