Home / 103,388.53-142,730.37-69,574.81

Finding the Fourth Proportional to 103,388.53, 142,730.37 and 69,574.81

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Solution

The fourth proportional to 103,388.53, 142,730.37 and 69,574.81 is: 96,049.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,388.53 : 142,730.37 = 69,574.81 : x
  2. Step 2: Convert to fraction form
    103,388.53/142,730.37 = 69,574.81/x
  3. Step 3: Cross multiply
    103,388.53x = 142,730.37 × 69,574.81
  4. Step 4: Simplify right side
    103,388.53x = 9,930,438,373.98
  5. Step 5: Solve for x
    x = 9,930,438,373.98/103,388.53
  6. Step 6: Final answer
    x = 96,049.71

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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.