Home / 130,379.31-179,892.61-73,790.68

Finding the Fourth Proportional to 130,379.31, 179,892.61 and 73,790.68

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Solution

The fourth proportional to 130,379.31, 179,892.61 and 73,790.68 is: 101,813.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,379.31 : 179,892.61 = 73,790.68 : x
  2. Step 2: Convert to fraction form
    130,379.31/179,892.61 = 73,790.68/x
  3. Step 3: Cross multiply
    130,379.31x = 179,892.61 × 73,790.68
  4. Step 4: Simplify right side
    130,379.31x = 13,274,398,018.87
  5. Step 5: Solve for x
    x = 13,274,398,018.87/130,379.31
  6. Step 6: Final answer
    x = 101,813.69

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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.