Home / 99,128.75-136,795.51-53,806.82

Finding the Fourth Proportional to 99,128.75, 136,795.51 and 53,806.82

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Solution

The fourth proportional to 99,128.75, 136,795.51 and 53,806.82 is: 74,252.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,128.75 : 136,795.51 = 53,806.82 : x
  2. Step 2: Convert to fraction form
    99,128.75/136,795.51 = 53,806.82/x
  3. Step 3: Cross multiply
    99,128.75x = 136,795.51 × 53,806.82
  4. Step 4: Simplify right side
    99,128.75x = 7,360,531,383.38
  5. Step 5: Solve for x
    x = 7,360,531,383.38/99,128.75
  6. Step 6: Final answer
    x = 74,252.24

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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.