Home / 130,282.12-179,786.14-72,922.20

Finding the Fourth Proportional to 130,282.12, 179,786.14 and 72,922.20

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Solution

The fourth proportional to 130,282.12, 179,786.14 and 72,922.20 is: 100,630.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,282.12 : 179,786.14 = 72,922.20 : x
  2. Step 2: Convert to fraction form
    130,282.12/179,786.14 = 72,922.20/x
  3. Step 3: Cross multiply
    130,282.12x = 179,786.14 × 72,922.20
  4. Step 4: Simplify right side
    130,282.12x = 13,110,400,858.31
  5. Step 5: Solve for x
    x = 13,110,400,858.31/130,282.12
  6. Step 6: Final answer
    x = 100,630.85

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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.