Home / 210,145.12-315,233.04-60,379.36

Finding the Fourth Proportional to 210,145.12, 315,233.04 and 60,379.36

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Solution

The fourth proportional to 210,145.12, 315,233.04 and 60,379.36 is: 90,573.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,145.12 : 315,233.04 = 60,379.36 : x
  2. Step 2: Convert to fraction form
    210,145.12/315,233.04 = 60,379.36/x
  3. Step 3: Cross multiply
    210,145.12x = 315,233.04 × 60,379.36
  4. Step 4: Simplify right side
    210,145.12x = 19,033,569,206.05
  5. Step 5: Solve for x
    x = 19,033,569,206.05/210,145.12
  6. Step 6: Final answer
    x = 90,573.45

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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.