Home / 210,120.98-315,181.22-77,011.64

Finding the Fourth Proportional to 210,120.98, 315,181.22 and 77,011.64

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Solution

The fourth proportional to 210,120.98, 315,181.22 and 77,011.64 is: 115,517.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,120.98 : 315,181.22 = 77,011.64 : x
  2. Step 2: Convert to fraction form
    210,120.98/315,181.22 = 77,011.64/x
  3. Step 3: Cross multiply
    210,120.98x = 315,181.22 × 77,011.64
  4. Step 4: Simplify right side
    210,120.98x = 24,272,622,649.40
  5. Step 5: Solve for x
    x = 24,272,622,649.40/210,120.98
  6. Step 6: Final answer
    x = 115,517.37

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1.5x scale

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.