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Finding the Fourth Proportional to 128,507.34, 192,773.91 and 44,256.40

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Solution

The fourth proportional to 128,507.34, 192,773.91 and 44,256.40 is: 66,389.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,507.34 : 192,773.91 = 44,256.40 : x
  2. Step 2: Convert to fraction form
    128,507.34/192,773.91 = 44,256.40/x
  3. Step 3: Cross multiply
    128,507.34x = 192,773.91 × 44,256.40
  4. Step 4: Simplify right side
    128,507.34x = 8,531,479,270.52
  5. Step 5: Solve for x
    x = 8,531,479,270.52/128,507.34
  6. Step 6: Final answer
    x = 66,389.04

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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.