Home / 103,614.04-143,033.66-79,731.80

Finding the Fourth Proportional to 103,614.04, 143,033.66 and 79,731.80

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Solution

The fourth proportional to 103,614.04, 143,033.66 and 79,731.80 is: 110,065.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,614.04 : 143,033.66 = 79,731.80 : x
  2. Step 2: Convert to fraction form
    103,614.04/143,033.66 = 79,731.80/x
  3. Step 3: Cross multiply
    103,614.04x = 143,033.66 × 79,731.80
  4. Step 4: Simplify right side
    103,614.04x = 11,404,331,172.39
  5. Step 5: Solve for x
    x = 11,404,331,172.39/103,614.04
  6. Step 6: Final answer
    x = 110,065.50

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1.5x scale

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.