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Finding the Fourth Proportional to 117,700.91, 162,430.44 and 63,989.54

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Solution

The fourth proportional to 117,700.91, 162,430.44 and 63,989.54 is: 88,307.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,700.91 : 162,430.44 = 63,989.54 : x
  2. Step 2: Convert to fraction form
    117,700.91/162,430.44 = 63,989.54/x
  3. Step 3: Cross multiply
    117,700.91x = 162,430.44 × 63,989.54
  4. Step 4: Simplify right side
    117,700.91x = 10,393,849,137.60
  5. Step 5: Solve for x
    x = 10,393,849,137.60/117,700.91
  6. Step 6: Final answer
    x = 88,307.30

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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.