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Finding the Fourth Proportional to 116,958.63, 161,390.80 and 86,348.01

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Solution

The fourth proportional to 116,958.63, 161,390.80 and 86,348.01 is: 119,151.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,958.63 : 161,390.80 = 86,348.01 : x
  2. Step 2: Convert to fraction form
    116,958.63/161,390.80 = 86,348.01/x
  3. Step 3: Cross multiply
    116,958.63x = 161,390.80 × 86,348.01
  4. Step 4: Simplify right side
    116,958.63x = 13,935,774,412.31
  5. Step 5: Solve for x
    x = 13,935,774,412.31/116,958.63
  6. Step 6: Final answer
    x = 119,151.31

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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.