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Finding the Fourth Proportional to 99,918.79, 137,883.90 and 54,595.63

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Solution

The fourth proportional to 99,918.79, 137,883.90 and 54,595.63 is: 75,339.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,918.79 : 137,883.90 = 54,595.63 : x
  2. Step 2: Convert to fraction form
    99,918.79/137,883.90 = 54,595.63/x
  3. Step 3: Cross multiply
    99,918.79x = 137,883.90 × 54,595.63
  4. Step 4: Simplify right side
    99,918.79x = 7,527,858,387.36
  5. Step 5: Solve for x
    x = 7,527,858,387.36/99,918.79
  6. Step 6: Final answer
    x = 75,339.77

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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.