Home / 212,971.88-319,423.95-70,805.34

Finding the Fourth Proportional to 212,971.88, 319,423.95 and 70,805.34

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Solution

The fourth proportional to 212,971.88, 319,423.95 and 70,805.34 is: 106,196.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,971.88 : 319,423.95 = 70,805.34 : x
  2. Step 2: Convert to fraction form
    212,971.88/319,423.95 = 70,805.34/x
  3. Step 3: Cross multiply
    212,971.88x = 319,423.95 × 70,805.34
  4. Step 4: Simplify right side
    212,971.88x = 22,616,921,383.89
  5. Step 5: Solve for x
    x = 22,616,921,383.89/212,971.88
  6. Step 6: Final answer
    x = 106,196.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.