Home / 123,688.61-185,408.27-48,779.81

Finding the Fourth Proportional to 123,688.61, 185,408.27 and 48,779.81

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Solution

The fourth proportional to 123,688.61, 185,408.27 and 48,779.81 is: 73,120.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,688.61 : 185,408.27 = 48,779.81 : x
  2. Step 2: Convert to fraction form
    123,688.61/185,408.27 = 48,779.81/x
  3. Step 3: Cross multiply
    123,688.61x = 185,408.27 × 48,779.81
  4. Step 4: Simplify right side
    123,688.61x = 9,044,180,183.03
  5. Step 5: Solve for x
    x = 9,044,180,183.03/123,688.61
  6. Step 6: Final answer
    x = 73,120.56

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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.