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Finding the Fourth Proportional to 161,671.35, 242,401.41 and 77,428.77

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Solution

The fourth proportional to 161,671.35, 242,401.41 and 77,428.77 is: 116,092.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,671.35 : 242,401.41 = 77,428.77 : x
  2. Step 2: Convert to fraction form
    161,671.35/242,401.41 = 77,428.77/x
  3. Step 3: Cross multiply
    161,671.35x = 242,401.41 × 77,428.77
  4. Step 4: Simplify right side
    161,671.35x = 18,768,843,022.57
  5. Step 5: Solve for x
    x = 18,768,843,022.57/161,671.35
  6. Step 6: Final answer
    x = 116,092.57

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1.5x scale

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.