Home / 161,603.42-242,405.22-77,343.78

Finding the Fourth Proportional to 161,603.42, 242,405.22 and 77,343.78

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Solution

The fourth proportional to 161,603.42, 242,405.22 and 77,343.78 is: 116,015.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,603.42 : 242,405.22 = 77,343.78 : x
  2. Step 2: Convert to fraction form
    161,603.42/242,405.22 = 77,343.78/x
  3. Step 3: Cross multiply
    161,603.42x = 242,405.22 × 77,343.78
  4. Step 4: Simplify right side
    161,603.42x = 18,748,536,006.53
  5. Step 5: Solve for x
    x = 18,748,536,006.53/161,603.42
  6. Step 6: Final answer
    x = 116,015.71

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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.