Home / 212,781.12-293,240.16-158,971.20

Finding the Fourth Proportional to 212,781.12, 293,240.16 and 158,971.20

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Solution

The fourth proportional to 212,781.12, 293,240.16 and 158,971.20 is: 219,083.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,781.12 : 293,240.16 = 158,971.20 : x
  2. Step 2: Convert to fraction form
    212,781.12/293,240.16 = 158,971.20/x
  3. Step 3: Cross multiply
    212,781.12x = 293,240.16 × 158,971.20
  4. Step 4: Simplify right side
    212,781.12x = 46,616,740,123.39
  5. Step 5: Solve for x
    x = 46,616,740,123.39/212,781.12
  6. Step 6: Final answer
    x = 219,083.07

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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.