Home / 111,845.19-154,321.02-81,646.95

Finding the Fourth Proportional to 111,845.19, 154,321.02 and 81,646.95

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Solution

The fourth proportional to 111,845.19, 154,321.02 and 81,646.95 is: 112,654.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,845.19 : 154,321.02 = 81,646.95 : x
  2. Step 2: Convert to fraction form
    111,845.19/154,321.02 = 81,646.95/x
  3. Step 3: Cross multiply
    111,845.19x = 154,321.02 × 81,646.95
  4. Step 4: Simplify right side
    111,845.19x = 12,599,840,603.89
  5. Step 5: Solve for x
    x = 12,599,840,603.89/111,845.19
  6. Step 6: Final answer
    x = 112,654.29

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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.