Home / 99,579.15-137,417.49-54,257.51

Finding the Fourth Proportional to 99,579.15, 137,417.49 and 54,257.51

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Solution

The fourth proportional to 99,579.15, 137,417.49 and 54,257.51 is: 74,874.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,579.15 : 137,417.49 = 54,257.51 : x
  2. Step 2: Convert to fraction form
    99,579.15/137,417.49 = 54,257.51/x
  3. Step 3: Cross multiply
    99,579.15x = 137,417.49 × 54,257.51
  4. Step 4: Simplify right side
    99,579.15x = 7,455,931,181.39
  5. Step 5: Solve for x
    x = 7,455,931,181.39/99,579.15
  6. Step 6: Final answer
    x = 74,874.42

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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.