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Finding the Fourth Proportional to 117,271.80, 161,830.74 and 63,555.66

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Solution

The fourth proportional to 117,271.80, 161,830.74 and 63,555.66 is: 87,704.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,271.80 : 161,830.74 = 63,555.66 : x
  2. Step 2: Convert to fraction form
    117,271.80/161,830.74 = 63,555.66/x
  3. Step 3: Cross multiply
    117,271.80x = 161,830.74 × 63,555.66
  4. Step 4: Simplify right side
    117,271.80x = 10,285,258,679.83
  5. Step 5: Solve for x
    x = 10,285,258,679.83/117,271.80
  6. Step 6: Final answer
    x = 87,704.45

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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.