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Finding the Fourth Proportional to 122,657.02, 169,271.48 and 68,941.87

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Solution

The fourth proportional to 122,657.02, 169,271.48 and 68,941.87 is: 95,142.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,657.02 : 169,271.48 = 68,941.87 : x
  2. Step 2: Convert to fraction form
    122,657.02/169,271.48 = 68,941.87/x
  3. Step 3: Cross multiply
    122,657.02x = 169,271.48 × 68,941.87
  4. Step 4: Simplify right side
    122,657.02x = 11,669,892,118.04
  5. Step 5: Solve for x
    x = 11,669,892,118.04/122,657.02
  6. Step 6: Final answer
    x = 95,142.47

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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.