Home / 99,109.82-136,772.55-53,788.19

Finding the Fourth Proportional to 99,109.82, 136,772.55 and 53,788.19

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Solution

The fourth proportional to 99,109.82, 136,772.55 and 53,788.19 is: 74,228.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,109.82 : 136,772.55 = 53,788.19 : x
  2. Step 2: Convert to fraction form
    99,109.82/136,772.55 = 53,788.19/x
  3. Step 3: Cross multiply
    99,109.82x = 136,772.55 × 53,788.19
  4. Step 4: Simplify right side
    99,109.82x = 7,356,748,248.12
  5. Step 5: Solve for x
    x = 7,356,748,248.12/99,109.82
  6. Step 6: Final answer
    x = 74,228.25

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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.