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Finding the Fourth Proportional to 114,989.21, 172,485.35 and 36,103.45

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Solution

The fourth proportional to 114,989.21, 172,485.35 and 36,103.45 is: 54,155.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,989.21 : 172,485.35 = 36,103.45 : x
  2. Step 2: Convert to fraction form
    114,989.21/172,485.35 = 36,103.45/x
  3. Step 3: Cross multiply
    114,989.21x = 172,485.35 × 36,103.45
  4. Step 4: Simplify right side
    114,989.21x = 6,227,315,166.51
  5. Step 5: Solve for x
    x = 6,227,315,166.51/114,989.21
  6. Step 6: Final answer
    x = 54,155.65

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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.