Home / 99,139.41-136,813.37-53,817.75

Finding the Fourth Proportional to 99,139.41, 136,813.37 and 53,817.75

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Solution

The fourth proportional to 99,139.41, 136,813.37 and 53,817.75 is: 74,269.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,139.41 : 136,813.37 = 53,817.75 : x
  2. Step 2: Convert to fraction form
    99,139.41/136,813.37 = 53,817.75/x
  3. Step 3: Cross multiply
    99,139.41x = 136,813.37 × 53,817.75
  4. Step 4: Simplify right side
    99,139.41x = 7,362,987,743.32
  5. Step 5: Solve for x
    x = 7,362,987,743.32/99,139.41
  6. Step 6: Final answer
    x = 74,269.03

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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.