Home / 158,595.78-218,865.16-86,971.52

Finding the Fourth Proportional to 158,595.78, 218,865.16 and 86,971.52

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Solution

The fourth proportional to 158,595.78, 218,865.16 and 86,971.52 is: 120,022.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,595.78 : 218,865.16 = 86,971.52 : x
  2. Step 2: Convert to fraction form
    158,595.78/218,865.16 = 86,971.52/x
  3. Step 3: Cross multiply
    158,595.78x = 218,865.16 × 86,971.52
  4. Step 4: Simplify right side
    158,595.78x = 19,035,035,640.24
  5. Step 5: Solve for x
    x = 19,035,035,640.24/158,595.78
  6. Step 6: Final answer
    x = 120,022.33

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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.