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Finding the Fourth Proportional to 130,344.84, 179,879.67 and 73,755

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Solution

The fourth proportional to 130,344.84, 179,879.67 and 73,755 is: 101,784.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,344.84 : 179,879.67 = 73,755 : x
  2. Step 2: Convert to fraction form
    130,344.84/179,879.67 = 73,755/x
  3. Step 3: Cross multiply
    130,344.84x = 179,879.67 × 73,755
  4. Step 4: Simplify right side
    130,344.84x = 13,267,025,060.85
  5. Step 5: Solve for x
    x = 13,267,025,060.85/130,344.84
  6. Step 6: Final answer
    x = 101,784.05

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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.