Home / 139,833.59-192,970.70-76,171.85

Finding the Fourth Proportional to 139,833.59, 192,970.70 and 76,171.85

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Solution

The fourth proportional to 139,833.59, 192,970.70 and 76,171.85 is: 105,117.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,833.59 : 192,970.70 = 76,171.85 : x
  2. Step 2: Convert to fraction form
    139,833.59/192,970.70 = 76,171.85/x
  3. Step 3: Cross multiply
    139,833.59x = 192,970.70 × 76,171.85
  4. Step 4: Simplify right side
    139,833.59x = 14,698,933,869.08
  5. Step 5: Solve for x
    x = 14,698,933,869.08/139,833.59
  6. Step 6: Final answer
    x = 105,117.34

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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.