Home / 130,031.68-179,441.56-72,672.36

Finding the Fourth Proportional to 130,031.68, 179,441.56 and 72,672.36

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Solution

The fourth proportional to 130,031.68, 179,441.56 and 72,672.36 is: 100,286.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,031.68 : 179,441.56 = 72,672.36 : x
  2. Step 2: Convert to fraction form
    130,031.68/179,441.56 = 72,672.36/x
  3. Step 3: Cross multiply
    130,031.68x = 179,441.56 × 72,672.36
  4. Step 4: Simplify right side
    130,031.68x = 13,040,441,647.28
  5. Step 5: Solve for x
    x = 13,040,441,647.28/130,031.68
  6. Step 6: Final answer
    x = 100,286.65

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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.