Home / 139,538.70-192,561.21-75,875.94

Finding the Fourth Proportional to 139,538.70, 192,561.21 and 75,875.94

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Solution

The fourth proportional to 139,538.70, 192,561.21 and 75,875.94 is: 104,707.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,538.70 : 192,561.21 = 75,875.94 : x
  2. Step 2: Convert to fraction form
    139,538.70/192,561.21 = 75,875.94/x
  3. Step 3: Cross multiply
    139,538.70x = 192,561.21 × 75,875.94
  4. Step 4: Simplify right side
    139,538.70x = 14,610,762,816.29
  5. Step 5: Solve for x
    x = 14,610,762,816.29/139,538.70
  6. Step 6: Final answer
    x = 104,707.60

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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.