Home / 129,921.39-179,292.12-70,305.39

Finding the Fourth Proportional to 129,921.39, 179,292.12 and 70,305.39

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Solution

The fourth proportional to 129,921.39, 179,292.12 and 70,305.39 is: 97,021.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,921.39 : 179,292.12 = 70,305.39 : x
  2. Step 2: Convert to fraction form
    129,921.39/179,292.12 = 70,305.39/x
  3. Step 3: Cross multiply
    129,921.39x = 179,292.12 × 70,305.39
  4. Step 4: Simplify right side
    129,921.39x = 12,605,202,420.53
  5. Step 5: Solve for x
    x = 12,605,202,420.53/129,921.39
  6. Step 6: Final answer
    x = 97,021.76

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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.