Home / 158,071.56-218,135.70-86,451.36

Finding the Fourth Proportional to 158,071.56, 218,135.70 and 86,451.36

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Solution

The fourth proportional to 158,071.56, 218,135.70 and 86,451.36 is: 119,301.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,071.56 : 218,135.70 = 86,451.36 : x
  2. Step 2: Convert to fraction form
    158,071.56/218,135.70 = 86,451.36/x
  3. Step 3: Cross multiply
    158,071.56x = 218,135.70 × 86,451.36
  4. Step 4: Simplify right side
    158,071.56x = 18,858,127,929.55
  5. Step 5: Solve for x
    x = 18,858,127,929.55/158,071.56
  6. Step 6: Final answer
    x = 119,301.21

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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.