Home / 212,985.36-319,358.16-70,754.49

Finding the Fourth Proportional to 212,985.36, 319,358.16 and 70,754.49

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Solution

The fourth proportional to 212,985.36, 319,358.16 and 70,754.49 is: 106,091.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,985.36 : 319,358.16 = 70,754.49 : x
  2. Step 2: Convert to fraction form
    212,985.36/319,358.16 = 70,754.49/x
  3. Step 3: Cross multiply
    212,985.36x = 319,358.16 × 70,754.49
  4. Step 4: Simplify right side
    212,985.36x = 22,596,023,738.14
  5. Step 5: Solve for x
    x = 22,596,023,738.14/212,985.36
  6. Step 6: Final answer
    x = 106,091.91

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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.