Home / 210,240.06-315,401.69-77,121.46

Finding the Fourth Proportional to 210,240.06, 315,401.69 and 77,121.46

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Solution

The fourth proportional to 210,240.06, 315,401.69 and 77,121.46 is: 115,697.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,240.06 : 315,401.69 = 77,121.46 : x
  2. Step 2: Convert to fraction form
    210,240.06/315,401.69 = 77,121.46/x
  3. Step 3: Cross multiply
    210,240.06x = 315,401.69 × 77,121.46
  4. Step 4: Simplify right side
    210,240.06x = 24,324,238,819.27
  5. Step 5: Solve for x
    x = 24,324,238,819.27/210,240.06
  6. Step 6: Final answer
    x = 115,697.45

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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.