Home / 103,788.55-143,172.21-69,392.53

Finding the Fourth Proportional to 103,788.55, 143,172.21 and 69,392.53

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Solution

The fourth proportional to 103,788.55, 143,172.21 and 69,392.53 is: 95,724.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,788.55 : 143,172.21 = 69,392.53 : x
  2. Step 2: Convert to fraction form
    103,788.55/143,172.21 = 69,392.53/x
  3. Step 3: Cross multiply
    103,788.55x = 143,172.21 × 69,392.53
  4. Step 4: Simplify right side
    103,788.55x = 9,935,081,877.59
  5. Step 5: Solve for x
    x = 9,935,081,877.59/103,788.55
  6. Step 6: Final answer
    x = 95,724.26

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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.