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Finding the Fourth Proportional to 117,488.80, 162,130.16 and 63,772.66

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Solution

The fourth proportional to 117,488.80, 162,130.16 and 63,772.66 is: 88,003.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,488.80 : 162,130.16 = 63,772.66 : x
  2. Step 2: Convert to fraction form
    117,488.80/162,130.16 = 63,772.66/x
  3. Step 3: Cross multiply
    117,488.80x = 162,130.16 × 63,772.66
  4. Step 4: Simplify right side
    117,488.80x = 10,339,471,569.43
  5. Step 5: Solve for x
    x = 10,339,471,569.43/117,488.80
  6. Step 6: Final answer
    x = 88,003.89

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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.