Home / 122,147,622.72-168,564,847.86-66,393,174.29

Finding the Fourth Proportional to 122,147,622.72, 168,564,847.86 and 66,393,174.29

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Solution

The fourth proportional to 122,147,622.72, 168,564,847.86 and 66,393,174.29 is: 91,623,193.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,147,622.72 : 168,564,847.86 = 66,393,174.29 : x
  2. Step 2: Convert to fraction form
    122,147,622.72/168,564,847.86 = 66,393,174.29/x
  3. Step 3: Cross multiply
    122,147,622.72x = 168,564,847.86 × 66,393,174.29
  4. Step 4: Simplify right side
    122,147,622.72x = 11,191,555,322,293,490
  5. Step 5: Solve for x
    x = 11,191,555,322,293,490/122,147,622.72
  6. Step 6: Final answer
    x = 91,623,193.91

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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.