Home / 129,972.60-179,362.20-70,356.60

Finding the Fourth Proportional to 129,972.60, 179,362.20 and 70,356.60

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Solution

The fourth proportional to 129,972.60, 179,362.20 and 70,356.60 is: 97,092.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,972.60 : 179,362.20 = 70,356.60 : x
  2. Step 2: Convert to fraction form
    129,972.60/179,362.20 = 70,356.60/x
  3. Step 3: Cross multiply
    129,972.60x = 179,362.20 × 70,356.60
  4. Step 4: Simplify right side
    129,972.60x = 12,619,313,311.93
  5. Step 5: Solve for x
    x = 12,619,313,311.93/129,972.60
  6. Step 6: Final answer
    x = 97,092.11

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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.