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Finding the Fourth Proportional to 117,443.66, 162,004.47 and 74,954.30

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Solution

The fourth proportional to 117,443.66, 162,004.47 and 74,954.30 is: 103,393.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,443.66 : 162,004.47 = 74,954.30 : x
  2. Step 2: Convert to fraction form
    117,443.66/162,004.47 = 74,954.30/x
  3. Step 3: Cross multiply
    117,443.66x = 162,004.47 × 74,954.30
  4. Step 4: Simplify right side
    117,443.66x = 12,142,931,645.72
  5. Step 5: Solve for x
    x = 12,142,931,645.72/117,443.66
  6. Step 6: Final answer
    x = 103,393.68

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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.