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Finding the Fourth Proportional to 139,220.83, 192,123.61 and 75,558.64

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Solution

The fourth proportional to 139,220.83, 192,123.61 and 75,558.64 is: 104,270.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,220.83 : 192,123.61 = 75,558.64 : x
  2. Step 2: Convert to fraction form
    139,220.83/192,123.61 = 75,558.64/x
  3. Step 3: Cross multiply
    139,220.83x = 192,123.61 × 75,558.64
  4. Step 4: Simplify right side
    139,220.83x = 14,516,598,014.28
  5. Step 5: Solve for x
    x = 14,516,598,014.28/139,220.83
  6. Step 6: Final answer
    x = 104,270.30

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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.