Home / 122,178.46-168,606.05-74,431.81

Finding the Fourth Proportional to 122,178.46, 168,606.05 and 74,431.81

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Solution

The fourth proportional to 122,178.46, 168,606.05 and 74,431.81 is: 102,715.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,178.46 : 168,606.05 = 74,431.81 : x
  2. Step 2: Convert to fraction form
    122,178.46/168,606.05 = 74,431.81/x
  3. Step 3: Cross multiply
    122,178.46x = 168,606.05 × 74,431.81
  4. Step 4: Simplify right side
    122,178.46x = 12,549,653,478.45
  5. Step 5: Solve for x
    x = 12,549,653,478.45/122,178.46
  6. Step 6: Final answer
    x = 102,715.76

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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.