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Finding the Fourth Proportional to 137,418.64, 205,831.72 and 92,800.04

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Solution

The fourth proportional to 137,418.64, 205,831.72 and 92,800.04 is: 139,000.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,418.64 : 205,831.72 = 92,800.04 : x
  2. Step 2: Convert to fraction form
    137,418.64/205,831.72 = 92,800.04/x
  3. Step 3: Cross multiply
    137,418.64x = 205,831.72 × 92,800.04
  4. Step 4: Simplify right side
    137,418.64x = 19,101,191,849.27
  5. Step 5: Solve for x
    x = 19,101,191,849.27/137,418.64
  6. Step 6: Final answer
    x = 139,000.01

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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.