Home / 139,533.04-192,562.08-78,285.12

Finding the Fourth Proportional to 139,533.04, 192,562.08 and 78,285.12

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Solution

The fourth proportional to 139,533.04, 192,562.08 and 78,285.12 is: 108,037.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,533.04 : 192,562.08 = 78,285.12 : x
  2. Step 2: Convert to fraction form
    139,533.04/192,562.08 = 78,285.12/x
  3. Step 3: Cross multiply
    139,533.04x = 192,562.08 × 78,285.12
  4. Step 4: Simplify right side
    139,533.04x = 15,074,745,540.25
  5. Step 5: Solve for x
    x = 15,074,745,540.25/139,533.04
  6. Step 6: Final answer
    x = 108,037.10

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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.