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Finding the Fourth Proportional to 116,718.93, 161,072.87 and 66,417.93

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Solution

The fourth proportional to 116,718.93, 161,072.87 and 66,417.93 is: 91,657.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,718.93 : 161,072.87 = 66,417.93 : x
  2. Step 2: Convert to fraction form
    116,718.93/161,072.87 = 66,417.93/x
  3. Step 3: Cross multiply
    116,718.93x = 161,072.87 × 66,417.93
  4. Step 4: Simplify right side
    116,718.93x = 10,698,126,272.47
  5. Step 5: Solve for x
    x = 10,698,126,272.47/116,718.93
  6. Step 6: Final answer
    x = 91,657.17

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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.