Home / 139,220.06-192,123.78-75,557.85

Finding the Fourth Proportional to 139,220.06, 192,123.78 and 75,557.85

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Solution

The fourth proportional to 139,220.06, 192,123.78 and 75,557.85 is: 104,269.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,220.06 : 192,123.78 = 75,557.85 : x
  2. Step 2: Convert to fraction form
    139,220.06/192,123.78 = 75,557.85/x
  3. Step 3: Cross multiply
    139,220.06x = 192,123.78 × 75,557.85
  4. Step 4: Simplify right side
    139,220.06x = 14,516,459,750.67
  5. Step 5: Solve for x
    x = 14,516,459,750.67/139,220.06
  6. Step 6: Final answer
    x = 104,269.89

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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.