Home / 119,855.21-165,349.87-84,068.60

Finding the Fourth Proportional to 119,855.21, 165,349.87 and 84,068.60

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Solution

The fourth proportional to 119,855.21, 165,349.87 and 84,068.60 is: 115,979.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,855.21 : 165,349.87 = 84,068.60 : x
  2. Step 2: Convert to fraction form
    119,855.21/165,349.87 = 84,068.60/x
  3. Step 3: Cross multiply
    119,855.21x = 165,349.87 × 84,068.60
  4. Step 4: Simplify right side
    119,855.21x = 13,900,732,081.08
  5. Step 5: Solve for x
    x = 13,900,732,081.08/119,855.21
  6. Step 6: Final answer
    x = 115,979.37

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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.