Home / 129,720.96-179,015.04-70,104.96

Finding the Fourth Proportional to 129,720.96, 179,015.04 and 70,104.96

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Solution

The fourth proportional to 129,720.96, 179,015.04 and 70,104.96 is: 96,744.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,720.96 : 179,015.04 = 70,104.96 : x
  2. Step 2: Convert to fraction form
    129,720.96/179,015.04 = 70,104.96/x
  3. Step 3: Cross multiply
    129,720.96x = 179,015.04 × 70,104.96
  4. Step 4: Simplify right side
    129,720.96x = 12,549,842,218.60
  5. Step 5: Solve for x
    x = 12,549,842,218.60/129,720.96
  6. Step 6: Final answer
    x = 96,744.91

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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.