Home / 155,688.62-214,855.40-91,164.29

Finding the Fourth Proportional to 155,688.62, 214,855.40 and 91,164.29

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Solution

The fourth proportional to 155,688.62, 214,855.40 and 91,164.29 is: 125,809.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,688.62 : 214,855.40 = 91,164.29 : x
  2. Step 2: Convert to fraction form
    155,688.62/214,855.40 = 91,164.29/x
  3. Step 3: Cross multiply
    155,688.62x = 214,855.40 × 91,164.29
  4. Step 4: Simplify right side
    155,688.62x = 19,587,139,147.30
  5. Step 5: Solve for x
    x = 19,587,139,147.30/155,688.62
  6. Step 6: Final answer
    x = 125,809.71

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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.