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Finding the Fourth Proportional to 120,663.80, 166,473.70 and 69,675.08

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Solution

The fourth proportional to 120,663.80, 166,473.70 and 69,675.08 is: 96,127.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,663.80 : 166,473.70 = 69,675.08 : x
  2. Step 2: Convert to fraction form
    120,663.80/166,473.70 = 69,675.08/x
  3. Step 3: Cross multiply
    120,663.80x = 166,473.70 × 69,675.08
  4. Step 4: Simplify right side
    120,663.80x = 11,599,068,365.40
  5. Step 5: Solve for x
    x = 11,599,068,365.40/120,663.80
  6. Step 6: Final answer
    x = 96,127.16

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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.