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Finding the Fourth Proportional to 128,172.32, 192,300.01 and 61,617.64

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Solution

The fourth proportional to 128,172.32, 192,300.01 and 61,617.64 is: 92,446.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,172.32 : 192,300.01 = 61,617.64 : x
  2. Step 2: Convert to fraction form
    128,172.32/192,300.01 = 61,617.64/x
  3. Step 3: Cross multiply
    128,172.32x = 192,300.01 × 61,617.64
  4. Step 4: Simplify right side
    128,172.32x = 11,849,073,060.03
  5. Step 5: Solve for x
    x = 11,849,073,060.03/128,172.32
  6. Step 6: Final answer
    x = 92,446.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.