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Finding the Fourth Proportional to 117,103.64, 161,603.10 and 63,389.10

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Solution

The fourth proportional to 117,103.64, 161,603.10 and 63,389.10 is: 87,477.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,103.64 : 161,603.10 = 63,389.10 : x
  2. Step 2: Convert to fraction form
    117,103.64/161,603.10 = 63,389.10/x
  3. Step 3: Cross multiply
    117,103.64x = 161,603.10 × 63,389.10
  4. Step 4: Simplify right side
    117,103.64x = 10,243,874,763.20
  5. Step 5: Solve for x
    x = 10,243,874,763.20/117,103.64
  6. Step 6: Final answer
    x = 87,477.00

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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.