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Finding the Fourth Proportional to 117,308.84, 161,848.14 and 66,316.64

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Solution

The fourth proportional to 117,308.84, 161,848.14 and 66,316.64 is: 91,495.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,308.84 : 161,848.14 = 66,316.64 : x
  2. Step 2: Convert to fraction form
    117,308.84/161,848.14 = 66,316.64/x
  3. Step 3: Cross multiply
    117,308.84x = 161,848.14 × 66,316.64
  4. Step 4: Simplify right side
    117,308.84x = 10,733,224,835.05
  5. Step 5: Solve for x
    x = 10,733,224,835.05/117,308.84
  6. Step 6: Final answer
    x = 91,495.45

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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.