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Finding the Fourth Proportional to 92,671.93, 139,007.90 and 80,154.77

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Solution

The fourth proportional to 92,671.93, 139,007.90 and 80,154.77 is: 120,232.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,671.93 : 139,007.90 = 80,154.77 : x
  2. Step 2: Convert to fraction form
    92,671.93/139,007.90 = 80,154.77/x
  3. Step 3: Cross multiply
    92,671.93x = 139,007.90 × 80,154.77
  4. Step 4: Simplify right side
    92,671.93x = 11,142,146,480.04
  5. Step 5: Solve for x
    x = 11,142,146,480.04/92,671.93
  6. Step 6: Final answer
    x = 120,232.16

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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.