Home / 103,615.04-143,035.04-79,732.80

Finding the Fourth Proportional to 103,615.04, 143,035.04 and 79,732.80

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Solution

The fourth proportional to 103,615.04, 143,035.04 and 79,732.80 is: 110,066.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,615.04 : 143,035.04 = 79,732.80 : x
  2. Step 2: Convert to fraction form
    103,615.04/143,035.04 = 79,732.80/x
  3. Step 3: Cross multiply
    103,615.04x = 143,035.04 × 79,732.80
  4. Step 4: Simplify right side
    103,615.04x = 11,404,584,237.31
  5. Step 5: Solve for x
    x = 11,404,584,237.31/103,615.04
  6. Step 6: Final answer
    x = 110,066.88

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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.