Home / 139,665.60-192,740.32-76,005.12

Finding the Fourth Proportional to 139,665.60, 192,740.32 and 76,005.12

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Solution

The fourth proportional to 139,665.60, 192,740.32 and 76,005.12 is: 104,888.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,665.60 : 192,740.32 = 76,005.12 : x
  2. Step 2: Convert to fraction form
    139,665.60/192,740.32 = 76,005.12/x
  3. Step 3: Cross multiply
    139,665.60x = 192,740.32 × 76,005.12
  4. Step 4: Simplify right side
    139,665.60x = 14,649,251,150.44
  5. Step 5: Solve for x
    x = 14,649,251,150.44/139,665.60
  6. Step 6: Final answer
    x = 104,888.04

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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.