Home / 130,286.72-179,780.54-72,929.24

Finding the Fourth Proportional to 130,286.72, 179,780.54 and 72,929.24

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Solution

The fourth proportional to 130,286.72, 179,780.54 and 72,929.24 is: 100,633.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,286.72 : 179,780.54 = 72,929.24 : x
  2. Step 2: Convert to fraction form
    130,286.72/179,780.54 = 72,929.24/x
  3. Step 3: Cross multiply
    130,286.72x = 179,780.54 × 72,929.24
  4. Step 4: Simplify right side
    130,286.72x = 13,111,258,148.99
  5. Step 5: Solve for x
    x = 13,111,258,148.99/130,286.72
  6. Step 6: Final answer
    x = 100,633.88

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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.