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Finding the Fourth Proportional to 116,918, 161,346.66 and 63,203.06

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Solution

The fourth proportional to 116,918, 161,346.66 and 63,203.06 is: 87,220.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,918 : 161,346.66 = 63,203.06 : x
  2. Step 2: Convert to fraction form
    116,918/161,346.66 = 63,203.06/x
  3. Step 3: Cross multiply
    116,918x = 161,346.66 × 63,203.06
  4. Step 4: Simplify right side
    116,918x = 10,197,602,632.78
  5. Step 5: Solve for x
    x = 10,197,602,632.78/116,918
  6. Step 6: Final answer
    x = 87,220.13

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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.