Home / 129,826.40-179,159.99-72,465.23

Finding the Fourth Proportional to 129,826.40, 179,159.99 and 72,465.23

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Solution

The fourth proportional to 129,826.40, 179,159.99 and 72,465.23 is: 100,001.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,826.40 : 179,159.99 = 72,465.23 : x
  2. Step 2: Convert to fraction form
    129,826.40/179,159.99 = 72,465.23/x
  3. Step 3: Cross multiply
    129,826.40x = 179,159.99 × 72,465.23
  4. Step 4: Simplify right side
    129,826.40x = 12,982,868,759.89
  5. Step 5: Solve for x
    x = 12,982,868,759.89/129,826.40
  6. Step 6: Final answer
    x = 100,001.76

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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.