Home / 139,219.86-192,123.45-75,557.64

Finding the Fourth Proportional to 139,219.86, 192,123.45 and 75,557.64

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Solution

The fourth proportional to 139,219.86, 192,123.45 and 75,557.64 is: 104,269.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,219.86 : 192,123.45 = 75,557.64 : x
  2. Step 2: Convert to fraction form
    139,219.86/192,123.45 = 75,557.64/x
  3. Step 3: Cross multiply
    139,219.86x = 192,123.45 × 75,557.64
  4. Step 4: Simplify right side
    139,219.86x = 14,516,394,470.66
  5. Step 5: Solve for x
    x = 14,516,394,470.66/139,219.86
  6. Step 6: Final answer
    x = 104,269.57

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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.