Home / 212,860.68-319,315.73-70,718.64

Finding the Fourth Proportional to 212,860.68, 319,315.73 and 70,718.64

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Solution

The fourth proportional to 212,860.68, 319,315.73 and 70,718.64 is: 106,086.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,860.68 : 319,315.73 = 70,718.64 : x
  2. Step 2: Convert to fraction form
    212,860.68/319,315.73 = 70,718.64/x
  3. Step 3: Cross multiply
    212,860.68x = 319,315.73 × 70,718.64
  4. Step 4: Simplify right side
    212,860.68x = 22,581,573,802.61
  5. Step 5: Solve for x
    x = 22,581,573,802.61/212,860.68
  6. Step 6: Final answer
    x = 106,086.17

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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.