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Finding the Fourth Proportional to 120,558.48, 166,350.48 and 80,332.32

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Solution

The fourth proportional to 120,558.48, 166,350.48 and 80,332.32 is: 110,845.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,558.48 : 166,350.48 = 80,332.32 : x
  2. Step 2: Convert to fraction form
    120,558.48/166,350.48 = 80,332.32/x
  3. Step 3: Cross multiply
    120,558.48x = 166,350.48 × 80,332.32
  4. Step 4: Simplify right side
    120,558.48x = 13,363,319,991.51
  5. Step 5: Solve for x
    x = 13,363,319,991.51/120,558.48
  6. Step 6: Final answer
    x = 110,845.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.