Home / 122,299.36-168,701.61-76,905.47

Finding the Fourth Proportional to 122,299.36, 168,701.61 and 76,905.47

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Solution

The fourth proportional to 122,299.36, 168,701.61 and 76,905.47 is: 106,084.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,299.36 : 168,701.61 = 76,905.47 : x
  2. Step 2: Convert to fraction form
    122,299.36/168,701.61 = 76,905.47/x
  3. Step 3: Cross multiply
    122,299.36x = 168,701.61 × 76,905.47
  4. Step 4: Simplify right side
    122,299.36x = 12,974,076,606.81
  5. Step 5: Solve for x
    x = 12,974,076,606.81/122,299.36
  6. Step 6: Final answer
    x = 106,084.58

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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.