Home / 129,921.50-179,291.68-70,305.50

Finding the Fourth Proportional to 129,921.50, 179,291.68 and 70,305.50

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Solution

The fourth proportional to 129,921.50, 179,291.68 and 70,305.50 is: 97,021.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,921.50 : 179,291.68 = 70,305.50 : x
  2. Step 2: Convert to fraction form
    129,921.50/179,291.68 = 70,305.50/x
  3. Step 3: Cross multiply
    129,921.50x = 179,291.68 × 70,305.50
  4. Step 4: Simplify right side
    129,921.50x = 12,605,191,208.24
  5. Step 5: Solve for x
    x = 12,605,191,208.24/129,921.50
  6. Step 6: Final answer
    x = 97,021.60

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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.