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Finding the Fourth Proportional to 117,485.55, 162,056.16 and 69,705

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Solution

The fourth proportional to 117,485.55, 162,056.16 and 69,705 is: 96,149.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,485.55 : 162,056.16 = 69,705 : x
  2. Step 2: Convert to fraction form
    117,485.55/162,056.16 = 69,705/x
  3. Step 3: Cross multiply
    117,485.55x = 162,056.16 × 69,705
  4. Step 4: Simplify right side
    117,485.55x = 11,296,124,632.80
  5. Step 5: Solve for x
    x = 11,296,124,632.80/117,485.55
  6. Step 6: Final answer
    x = 96,149.06

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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.