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Finding the Fourth Proportional to 117,160.66, 161,681.80 and 63,445.73

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Solution

The fourth proportional to 117,160.66, 161,681.80 and 63,445.73 is: 87,555.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,160.66 : 161,681.80 = 63,445.73 : x
  2. Step 2: Convert to fraction form
    117,160.66/161,681.80 = 63,445.73/x
  3. Step 3: Cross multiply
    117,160.66x = 161,681.80 × 63,445.73
  4. Step 4: Simplify right side
    117,160.66x = 10,258,019,915.69
  5. Step 5: Solve for x
    x = 10,258,019,915.69/117,160.66
  6. Step 6: Final answer
    x = 87,555.16

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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.