Home / 130,286.40-179,780.11-72,928.93

Finding the Fourth Proportional to 130,286.40, 179,780.11 and 72,928.93

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Solution

The fourth proportional to 130,286.40, 179,780.11 and 72,928.93 is: 100,633.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,286.40 : 179,780.11 = 72,928.93 : x
  2. Step 2: Convert to fraction form
    130,286.40/179,780.11 = 72,928.93/x
  3. Step 3: Cross multiply
    130,286.40x = 179,780.11 × 72,928.93
  4. Step 4: Simplify right side
    130,286.40x = 13,111,171,057.58
  5. Step 5: Solve for x
    x = 13,111,171,057.58/130,286.40
  6. Step 6: Final answer
    x = 100,633.46

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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.