Home / 99,135.40-136,806.96-53,813.36

Finding the Fourth Proportional to 99,135.40, 136,806.96 and 53,813.36

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Solution

The fourth proportional to 99,135.40, 136,806.96 and 53,813.36 is: 74,262.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,135.40 : 136,806.96 = 53,813.36 : x
  2. Step 2: Convert to fraction form
    99,135.40/136,806.96 = 53,813.36/x
  3. Step 3: Cross multiply
    99,135.40x = 136,806.96 × 53,813.36
  4. Step 4: Simplify right side
    99,135.40x = 7,362,042,188.99
  5. Step 5: Solve for x
    x = 7,362,042,188.99/99,135.40
  6. Step 6: Final answer
    x = 74,262.50

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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.