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Finding the Fourth Proportional to 158,322.57, 236,922.90 and 139,639.11

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Solution

The fourth proportional to 158,322.57, 236,922.90 and 139,639.11 is: 208,963.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,322.57 : 236,922.90 = 139,639.11 : x
  2. Step 2: Convert to fraction form
    158,322.57/236,922.90 = 139,639.11/x
  3. Step 3: Cross multiply
    158,322.57x = 236,922.90 × 139,639.11
  4. Step 4: Simplify right side
    158,322.57x = 33,083,702,894.62
  5. Step 5: Solve for x
    x = 33,083,702,894.62/158,322.57
  6. Step 6: Final answer
    x = 208,963.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.