Home / 212,677.65-319,047.99-68,535.16

Finding the Fourth Proportional to 212,677.65, 319,047.99 and 68,535.16

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Solution

The fourth proportional to 212,677.65, 319,047.99 and 68,535.16 is: 102,812.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,677.65 : 319,047.99 = 68,535.16 : x
  2. Step 2: Convert to fraction form
    212,677.65/319,047.99 = 68,535.16/x
  3. Step 3: Cross multiply
    212,677.65x = 319,047.99 × 68,535.16
  4. Step 4: Simplify right side
    212,677.65x = 21,866,005,975.10
  5. Step 5: Solve for x
    x = 21,866,005,975.10/212,677.65
  6. Step 6: Final answer
    x = 102,812.90

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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.