Home / 111,010.20-166,515.30-77,767.80

Finding the Fourth Proportional to 111,010.20, 166,515.30 and 77,767.80

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Solution

The fourth proportional to 111,010.20, 166,515.30 and 77,767.80 is: 116,651.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,010.20 : 166,515.30 = 77,767.80 : x
  2. Step 2: Convert to fraction form
    111,010.20/166,515.30 = 77,767.80/x
  3. Step 3: Cross multiply
    111,010.20x = 166,515.30 × 77,767.80
  4. Step 4: Simplify right side
    111,010.20x = 12,949,528,547.34
  5. Step 5: Solve for x
    x = 12,949,528,547.34/111,010.20
  6. Step 6: Final answer
    x = 116,651.70

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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.