Home / 112,111.97-154,627.04-71,829.51

Finding the Fourth Proportional to 112,111.97, 154,627.04 and 71,829.51

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Solution

The fourth proportional to 112,111.97, 154,627.04 and 71,829.51 is: 99,068.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,111.97 : 154,627.04 = 71,829.51 : x
  2. Step 2: Convert to fraction form
    112,111.97/154,627.04 = 71,829.51/x
  3. Step 3: Cross multiply
    112,111.97x = 154,627.04 × 71,829.51
  4. Step 4: Simplify right side
    112,111.97x = 11,106,784,515.95
  5. Step 5: Solve for x
    x = 11,106,784,515.95/112,111.97
  6. Step 6: Final answer
    x = 99,068.68

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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.