Home / 210,629.70-315,944.55-77,514.30

Finding the Fourth Proportional to 210,629.70, 315,944.55 and 77,514.30

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Solution

The fourth proportional to 210,629.70, 315,944.55 and 77,514.30 is: 116,271.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,629.70 : 315,944.55 = 77,514.30 : x
  2. Step 2: Convert to fraction form
    210,629.70/315,944.55 = 77,514.30/x
  3. Step 3: Cross multiply
    210,629.70x = 315,944.55 × 77,514.30
  4. Step 4: Simplify right side
    210,629.70x = 24,490,220,632.07
  5. Step 5: Solve for x
    x = 24,490,220,632.07/210,629.70
  6. Step 6: Final answer
    x = 116,271.45

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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.