Home / 129,868.86-179,219.16-73,285.50

Finding the Fourth Proportional to 129,868.86, 179,219.16 and 73,285.50

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Solution

The fourth proportional to 129,868.86, 179,219.16 and 73,285.50 is: 101,134.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,868.86 : 179,219.16 = 73,285.50 : x
  2. Step 2: Convert to fraction form
    129,868.86/179,219.16 = 73,285.50/x
  3. Step 3: Cross multiply
    129,868.86x = 179,219.16 × 73,285.50
  4. Step 4: Simplify right side
    129,868.86x = 13,134,165,750.18
  5. Step 5: Solve for x
    x = 13,134,165,750.18/129,868.86
  6. Step 6: Final answer
    x = 101,134.07

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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.