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Finding the Fourth Proportional to 117,055.96, 161,537.80 and 66,070.86

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Solution

The fourth proportional to 117,055.96, 161,537.80 and 66,070.86 is: 91,178.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,055.96 : 161,537.80 = 66,070.86 : x
  2. Step 2: Convert to fraction form
    117,055.96/161,537.80 = 66,070.86/x
  3. Step 3: Cross multiply
    117,055.96x = 161,537.80 × 66,070.86
  4. Step 4: Simplify right side
    117,055.96x = 10,672,941,368.51
  5. Step 5: Solve for x
    x = 10,672,941,368.51/117,055.96
  6. Step 6: Final answer
    x = 91,178.11

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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.