Home / 111,913.47-154,451.75-83,569.95

Finding the Fourth Proportional to 111,913.47, 154,451.75 and 83,569.95

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Solution

The fourth proportional to 111,913.47, 154,451.75 and 83,569.95 is: 115,334.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,913.47 : 154,451.75 = 83,569.95 : x
  2. Step 2: Convert to fraction form
    111,913.47/154,451.75 = 83,569.95/x
  3. Step 3: Cross multiply
    111,913.47x = 154,451.75 × 83,569.95
  4. Step 4: Simplify right side
    111,913.47x = 12,907,524,607.06
  5. Step 5: Solve for x
    x = 12,907,524,607.06/111,913.47
  6. Step 6: Final answer
    x = 115,334.86

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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.