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Finding the Fourth Proportional to 103,409.87, 142,683.47 and 60,369.81

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Solution

The fourth proportional to 103,409.87, 142,683.47 and 60,369.81 is: 83,297.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,409.87 : 142,683.47 = 60,369.81 : x
  2. Step 2: Convert to fraction form
    103,409.87/142,683.47 = 60,369.81/x
  3. Step 3: Cross multiply
    103,409.87x = 142,683.47 × 60,369.81
  4. Step 4: Simplify right side
    103,409.87x = 8,613,773,703.10
  5. Step 5: Solve for x
    x = 8,613,773,703.10/103,409.87
  6. Step 6: Final answer
    x = 83,297.41

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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.