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Finding the Fourth Proportional to 120,362.21, 166,097.83 and 66,646.07

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Solution

The fourth proportional to 120,362.21, 166,097.83 and 66,646.07 is: 91,970.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,362.21 : 166,097.83 = 66,646.07 : x
  2. Step 2: Convert to fraction form
    120,362.21/166,097.83 = 66,646.07/x
  3. Step 3: Cross multiply
    120,362.21x = 166,097.83 × 66,646.07
  4. Step 4: Simplify right side
    120,362.21x = 11,069,767,853.66
  5. Step 5: Solve for x
    x = 11,069,767,853.66/120,362.21
  6. Step 6: Final answer
    x = 91,970.46

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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.