Home / 121,029.12-167,056.56-78,593.76

Finding the Fourth Proportional to 121,029.12, 167,056.56 and 78,593.76

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Solution

The fourth proportional to 121,029.12, 167,056.56 and 78,593.76 is: 108,483.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,029.12 : 167,056.56 = 78,593.76 : x
  2. Step 2: Convert to fraction form
    121,029.12/167,056.56 = 78,593.76/x
  3. Step 3: Cross multiply
    121,029.12x = 167,056.56 × 78,593.76
  4. Step 4: Simplify right side
    121,029.12x = 13,129,603,183.07
  5. Step 5: Solve for x
    x = 13,129,603,183.07/121,029.12
  6. Step 6: Final answer
    x = 108,483.01

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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.