Home / 155,828.70-214,992.03-87,837.30

Finding the Fourth Proportional to 155,828.70, 214,992.03 and 87,837.30

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Solution

The fourth proportional to 155,828.70, 214,992.03 and 87,837.30 is: 121,186.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,828.70 : 214,992.03 = 87,837.30 : x
  2. Step 2: Convert to fraction form
    155,828.70/214,992.03 = 87,837.30/x
  3. Step 3: Cross multiply
    155,828.70x = 214,992.03 × 87,837.30
  4. Step 4: Simplify right side
    155,828.70x = 18,884,319,436.72
  5. Step 5: Solve for x
    x = 18,884,319,436.72/155,828.70
  6. Step 6: Final answer
    x = 121,186.40

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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.