Home / 111,359.90-166,821.15-103,486.70

Finding the Fourth Proportional to 111,359.90, 166,821.15 and 103,486.70

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Solution

The fourth proportional to 111,359.90, 166,821.15 and 103,486.70 is: 155,026.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,359.90 : 166,821.15 = 103,486.70 : x
  2. Step 2: Convert to fraction form
    111,359.90/166,821.15 = 103,486.70/x
  3. Step 3: Cross multiply
    111,359.90x = 166,821.15 × 103,486.70
  4. Step 4: Simplify right side
    111,359.90x = 17,263,770,303.71
  5. Step 5: Solve for x
    x = 17,263,770,303.71/111,359.90
  6. Step 6: Final answer
    x = 155,026.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.