Home / 210,492.35-315,975.15-84,221.69

Finding the Fourth Proportional to 210,492.35, 315,975.15 and 84,221.69

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Solution

The fourth proportional to 210,492.35, 315,975.15 and 84,221.69 is: 126,427.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,492.35 : 315,975.15 = 84,221.69 : x
  2. Step 2: Convert to fraction form
    210,492.35/315,975.15 = 84,221.69/x
  3. Step 3: Cross multiply
    210,492.35x = 315,975.15 × 84,221.69
  4. Step 4: Simplify right side
    210,492.35x = 26,611,961,920.94
  5. Step 5: Solve for x
    x = 26,611,961,920.94/210,492.35
  6. Step 6: Final answer
    x = 126,427.22

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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.