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Finding the Fourth Proportional to 125,398.63, 188,126.58 and 54,333.07

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Solution

The fourth proportional to 125,398.63, 188,126.58 and 54,333.07 is: 81,512.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,398.63 : 188,126.58 = 54,333.07 : x
  2. Step 2: Convert to fraction form
    125,398.63/188,126.58 = 54,333.07/x
  3. Step 3: Cross multiply
    125,398.63x = 188,126.58 × 54,333.07
  4. Step 4: Simplify right side
    125,398.63x = 10,221,494,640.00
  5. Step 5: Solve for x
    x = 10,221,494,640.00/125,398.63
  6. Step 6: Final answer
    x = 81,512.01

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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.