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Finding the Fourth Proportional to 92,160.90, 138,247.57 and 31,346.39

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Solution

The fourth proportional to 92,160.90, 138,247.57 and 31,346.39 is: 47,021.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,160.90 : 138,247.57 = 31,346.39 : x
  2. Step 2: Convert to fraction form
    92,160.90/138,247.57 = 31,346.39/x
  3. Step 3: Cross multiply
    92,160.90x = 138,247.57 × 31,346.39
  4. Step 4: Simplify right side
    92,160.90x = 4,333,562,245.77
  5. Step 5: Solve for x
    x = 4,333,562,245.77/92,160.90
  6. Step 6: Final answer
    x = 47,021.70

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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.