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Finding the Fourth Proportional to 128,095.22, 176,627.64 and 82,713.60

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Solution

The fourth proportional to 128,095.22, 176,627.64 and 82,713.60 is: 114,051.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,095.22 : 176,627.64 = 82,713.60 : x
  2. Step 2: Convert to fraction form
    128,095.22/176,627.64 = 82,713.60/x
  3. Step 3: Cross multiply
    128,095.22x = 176,627.64 × 82,713.60
  4. Step 4: Simplify right side
    128,095.22x = 14,609,507,963.90
  5. Step 5: Solve for x
    x = 14,609,507,963.90/128,095.22
  6. Step 6: Final answer
    x = 114,051.94

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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.