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Finding the Fourth Proportional to 117,358.28, 161,953.54 and 63,643.40

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Solution

The fourth proportional to 117,358.28, 161,953.54 and 63,643.40 is: 87,827.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,358.28 : 161,953.54 = 63,643.40 : x
  2. Step 2: Convert to fraction form
    117,358.28/161,953.54 = 63,643.40/x
  3. Step 3: Cross multiply
    117,358.28x = 161,953.54 × 63,643.40
  4. Step 4: Simplify right side
    117,358.28x = 10,307,273,927.64
  5. Step 5: Solve for x
    x = 10,307,273,927.64/117,358.28
  6. Step 6: Final answer
    x = 87,827.41

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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.