Home / 122,299.61-168,701.94-76,905.72

Finding the Fourth Proportional to 122,299.61, 168,701.94 and 76,905.72

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Solution

The fourth proportional to 122,299.61, 168,701.94 and 76,905.72 is: 106,084.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,299.61 : 168,701.94 = 76,905.72 : x
  2. Step 2: Convert to fraction form
    122,299.61/168,701.94 = 76,905.72/x
  3. Step 3: Cross multiply
    122,299.61x = 168,701.94 × 76,905.72
  4. Step 4: Simplify right side
    122,299.61x = 12,974,144,161.10
  5. Step 5: Solve for x
    x = 12,974,144,161.10/122,299.61
  6. Step 6: Final answer
    x = 106,084.92

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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.