Home / 129,789.72-179,110.08-73,201.32

Finding the Fourth Proportional to 129,789.72, 179,110.08 and 73,201.32

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Solution

The fourth proportional to 129,789.72, 179,110.08 and 73,201.32 is: 101,017.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,789.72 : 179,110.08 = 73,201.32 : x
  2. Step 2: Convert to fraction form
    129,789.72/179,110.08 = 73,201.32/x
  3. Step 3: Cross multiply
    129,789.72x = 179,110.08 × 73,201.32
  4. Step 4: Simplify right side
    129,789.72x = 13,111,094,281.31
  5. Step 5: Solve for x
    x = 13,111,094,281.31/129,789.72
  6. Step 6: Final answer
    x = 101,017.97

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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.