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Finding the Fourth Proportional to 99,460.90, 137,251.80 and 54,138.94

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Solution

The fourth proportional to 99,460.90, 137,251.80 and 54,138.94 is: 74,709.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,460.90 : 137,251.80 = 54,138.94 : x
  2. Step 2: Convert to fraction form
    99,460.90/137,251.80 = 54,138.94/x
  3. Step 3: Cross multiply
    99,460.90x = 137,251.80 × 54,138.94
  4. Step 4: Simplify right side
    99,460.90x = 7,430,666,965.09
  5. Step 5: Solve for x
    x = 7,430,666,965.09/99,460.90
  6. Step 6: Final answer
    x = 74,709.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.