Home / 142,125.45-213,299.55-99,151.41

Finding the Fourth Proportional to 142,125.45, 213,299.55 and 99,151.41

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Solution

The fourth proportional to 142,125.45, 213,299.55 and 99,151.41 is: 148,804.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,125.45 : 213,299.55 = 99,151.41 : x
  2. Step 2: Convert to fraction form
    142,125.45/213,299.55 = 99,151.41/x
  3. Step 3: Cross multiply
    142,125.45x = 213,299.55 × 99,151.41
  4. Step 4: Simplify right side
    142,125.45x = 21,148,951,134.87
  5. Step 5: Solve for x
    x = 21,148,951,134.87/142,125.45
  6. Step 6: Final answer
    x = 148,804.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.