Home / 99,431.51-137,215.76-54,109.44

Finding the Fourth Proportional to 99,431.51, 137,215.76 and 54,109.44

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Solution

The fourth proportional to 99,431.51, 137,215.76 and 54,109.44 is: 74,671.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,431.51 : 137,215.76 = 54,109.44 : x
  2. Step 2: Convert to fraction form
    99,431.51/137,215.76 = 54,109.44/x
  3. Step 3: Cross multiply
    99,431.51x = 137,215.76 × 54,109.44
  4. Step 4: Simplify right side
    99,431.51x = 7,424,667,662.23
  5. Step 5: Solve for x
    x = 7,424,667,662.23/99,431.51
  6. Step 6: Final answer
    x = 74,671.18

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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.