Home / 212,898.63-293,786.69-122,190.76

Finding the Fourth Proportional to 212,898.63, 293,786.69 and 122,190.76

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Solution

The fourth proportional to 212,898.63, 293,786.69 and 122,190.76 is: 168,615.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,898.63 : 293,786.69 = 122,190.76 : x
  2. Step 2: Convert to fraction form
    212,898.63/293,786.69 = 122,190.76/x
  3. Step 3: Cross multiply
    212,898.63x = 293,786.69 × 122,190.76
  4. Step 4: Simplify right side
    212,898.63x = 35,898,018,928.98
  5. Step 5: Solve for x
    x = 35,898,018,928.98/212,898.63
  6. Step 6: Final answer
    x = 168,615.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.