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Finding the Fourth Proportional to 129,901, 179,263.50 and 73,311.16

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Solution

The fourth proportional to 129,901, 179,263.50 and 73,311.16 is: 101,169.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,901 : 179,263.50 = 73,311.16 : x
  2. Step 2: Convert to fraction form
    129,901/179,263.50 = 73,311.16/x
  3. Step 3: Cross multiply
    129,901x = 179,263.50 × 73,311.16
  4. Step 4: Simplify right side
    129,901x = 13,142,015,130.66
  5. Step 5: Solve for x
    x = 13,142,015,130.66/129,901
  6. Step 6: Final answer
    x = 101,169.47

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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.