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Finding the Fourth Proportional to 192,389.16, 288,587.84 and 66,028.86

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Solution

The fourth proportional to 192,389.16, 288,587.84 and 66,028.86 is: 99,044.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,389.16 : 288,587.84 = 66,028.86 : x
  2. Step 2: Convert to fraction form
    192,389.16/288,587.84 = 66,028.86/x
  3. Step 3: Cross multiply
    192,389.16x = 288,587.84 × 66,028.86
  4. Step 4: Simplify right side
    192,389.16x = 19,055,126,085.06
  5. Step 5: Solve for x
    x = 19,055,126,085.06/192,389.16
  6. Step 6: Final answer
    x = 99,044.70

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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.