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Finding the Fourth Proportional to 129,896.76, 179,253.90 and 73,313.40

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Solution

The fourth proportional to 129,896.76, 179,253.90 and 73,313.40 is: 101,170.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,896.76 : 179,253.90 = 73,313.40 : x
  2. Step 2: Convert to fraction form
    129,896.76/179,253.90 = 73,313.40/x
  3. Step 3: Cross multiply
    129,896.76x = 179,253.90 × 73,313.40
  4. Step 4: Simplify right side
    129,896.76x = 13,141,712,872.26
  5. Step 5: Solve for x
    x = 13,141,712,872.26/129,896.76
  6. Step 6: Final answer
    x = 101,170.44

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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.