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Finding the Fourth Proportional to 120,999.04, 166,980.72 and 66,553.52

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Solution

The fourth proportional to 120,999.04, 166,980.72 and 66,553.52 is: 91,844.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,999.04 : 166,980.72 = 66,553.52 : x
  2. Step 2: Convert to fraction form
    120,999.04/166,980.72 = 66,553.52/x
  3. Step 3: Cross multiply
    120,999.04x = 166,980.72 × 66,553.52
  4. Step 4: Simplify right side
    120,999.04x = 11,113,154,688.13
  5. Step 5: Solve for x
    x = 11,113,154,688.13/120,999.04
  6. Step 6: Final answer
    x = 91,844.98

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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.