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Finding the Fourth Proportional to 147,664.62, 203,348.32 and 128,274.64

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Solution

The fourth proportional to 147,664.62, 203,348.32 and 128,274.64 is: 176,646.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,664.62 : 203,348.32 = 128,274.64 : x
  2. Step 2: Convert to fraction form
    147,664.62/203,348.32 = 128,274.64/x
  3. Step 3: Cross multiply
    147,664.62x = 203,348.32 × 128,274.64
  4. Step 4: Simplify right side
    147,664.62x = 26,084,432,435.09
  5. Step 5: Solve for x
    x = 26,084,432,435.09/147,664.62
  6. Step 6: Final answer
    x = 176,646.46

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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.