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Finding the Fourth Proportional to 120,657.51, 166,522.13 and 69,670.11

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Solution

The fourth proportional to 120,657.51, 166,522.13 and 69,670.11 is: 96,153.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,657.51 : 166,522.13 = 69,670.11 : x
  2. Step 2: Convert to fraction form
    120,657.51/166,522.13 = 69,670.11/x
  3. Step 3: Cross multiply
    120,657.51x = 166,522.13 × 69,670.11
  4. Step 4: Simplify right side
    120,657.51x = 11,601,614,715.22
  5. Step 5: Solve for x
    x = 11,601,614,715.22/120,657.51
  6. Step 6: Final answer
    x = 96,153.28

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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.