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Finding the Fourth Proportional to 128,030.22, 192,143.34 and 57,958.74

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Solution

The fourth proportional to 128,030.22, 192,143.34 and 57,958.74 is: 86,982.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,030.22 : 192,143.34 = 57,958.74 : x
  2. Step 2: Convert to fraction form
    128,030.22/192,143.34 = 57,958.74/x
  3. Step 3: Cross multiply
    128,030.22x = 192,143.34 × 57,958.74
  4. Step 4: Simplify right side
    128,030.22x = 11,136,385,885.79
  5. Step 5: Solve for x
    x = 11,136,385,885.79/128,030.22
  6. Step 6: Final answer
    x = 86,982.48

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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.