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Finding the Fourth Proportional to 128,157.72, 192,221.28 and 34,670.76

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Solution

The fourth proportional to 128,157.72, 192,221.28 and 34,670.76 is: 52,002.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,157.72 : 192,221.28 = 34,670.76 : x
  2. Step 2: Convert to fraction form
    128,157.72/192,221.28 = 34,670.76/x
  3. Step 3: Cross multiply
    128,157.72x = 192,221.28 × 34,670.76
  4. Step 4: Simplify right side
    128,157.72x = 6,664,457,865.77
  5. Step 5: Solve for x
    x = 6,664,457,865.77/128,157.72
  6. Step 6: Final answer
    x = 52,002.00

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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.