Home / 129,748.50-178,960.05-84,341.79

Finding the Fourth Proportional to 129,748.50, 178,960.05 and 84,341.79

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Solution

The fourth proportional to 129,748.50, 178,960.05 and 84,341.79 is: 116,331.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,748.50 : 178,960.05 = 84,341.79 : x
  2. Step 2: Convert to fraction form
    129,748.50/178,960.05 = 84,341.79/x
  3. Step 3: Cross multiply
    129,748.50x = 178,960.05 × 84,341.79
  4. Step 4: Simplify right side
    129,748.50x = 15,093,810,955.49
  5. Step 5: Solve for x
    x = 15,093,810,955.49/129,748.50
  6. Step 6: Final answer
    x = 116,331.29

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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.