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Finding the Fourth Proportional to 128,393.64, 192,614.58 and 58,277.88

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Solution

The fourth proportional to 128,393.64, 192,614.58 and 58,277.88 is: 87,427.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,393.64 : 192,614.58 = 58,277.88 : x
  2. Step 2: Convert to fraction form
    128,393.64/192,614.58 = 58,277.88/x
  3. Step 3: Cross multiply
    128,393.64x = 192,614.58 × 58,277.88
  4. Step 4: Simplify right side
    128,393.64x = 11,225,169,379.49
  5. Step 5: Solve for x
    x = 11,225,169,379.49/128,393.64
  6. Step 6: Final answer
    x = 87,427.77

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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.