Home / 111,320.88-153,770.04-82,977.36

Finding the Fourth Proportional to 111,320.88, 153,770.04 and 82,977.36

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Solution

The fourth proportional to 111,320.88, 153,770.04 and 82,977.36 is: 114,618.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,320.88 : 153,770.04 = 82,977.36 : x
  2. Step 2: Convert to fraction form
    111,320.88/153,770.04 = 82,977.36/x
  3. Step 3: Cross multiply
    111,320.88x = 153,770.04 × 82,977.36
  4. Step 4: Simplify right side
    111,320.88x = 12,759,431,966.29
  5. Step 5: Solve for x
    x = 12,759,431,966.29/111,320.88
  6. Step 6: Final answer
    x = 114,618.50

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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.