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Finding the Fourth Proportional to 117,855, 162,639.90 and 67,583.16

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Solution

The fourth proportional to 117,855, 162,639.90 and 67,583.16 is: 93,264.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,855 : 162,639.90 = 67,583.16 : x
  2. Step 2: Convert to fraction form
    117,855/162,639.90 = 67,583.16/x
  3. Step 3: Cross multiply
    117,855x = 162,639.90 × 67,583.16
  4. Step 4: Simplify right side
    117,855x = 10,991,718,384.08
  5. Step 5: Solve for x
    x = 10,991,718,384.08/117,855
  6. Step 6: Final answer
    x = 93,264.76

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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.