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Finding the Fourth Proportional to 122,782.45, 169,438.08 and 69,067.45

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Solution

The fourth proportional to 122,782.45, 169,438.08 and 69,067.45 is: 95,312.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,782.45 : 169,438.08 = 69,067.45 : x
  2. Step 2: Convert to fraction form
    122,782.45/169,438.08 = 69,067.45/x
  3. Step 3: Cross multiply
    122,782.45x = 169,438.08 × 69,067.45
  4. Step 4: Simplify right side
    122,782.45x = 11,702,656,118.50
  5. Step 5: Solve for x
    x = 11,702,656,118.50/122,782.45
  6. Step 6: Final answer
    x = 95,312.12

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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.