Home / 120,533.48-166,128.48-80,175.08

Finding the Fourth Proportional to 120,533.48, 166,128.48 and 80,175.08

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Solution

The fourth proportional to 120,533.48, 166,128.48 and 80,175.08 is: 110,503.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,533.48 : 166,128.48 = 80,175.08 : x
  2. Step 2: Convert to fraction form
    120,533.48/166,128.48 = 80,175.08/x
  3. Step 3: Cross multiply
    120,533.48x = 166,128.48 × 80,175.08
  4. Step 4: Simplify right side
    120,533.48x = 13,319,364,174.28
  5. Step 5: Solve for x
    x = 13,319,364,174.28/120,533.48
  6. Step 6: Final answer
    x = 110,503.44

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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.