Home / 210,845.43-291,087-139,432.59

Finding the Fourth Proportional to 210,845.43, 291,087 and 139,432.59

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Solution

The fourth proportional to 210,845.43, 291,087 and 139,432.59 is: 192,496.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,845.43 : 291,087 = 139,432.59 : x
  2. Step 2: Convert to fraction form
    210,845.43/291,087 = 139,432.59/x
  3. Step 3: Cross multiply
    210,845.43x = 291,087 × 139,432.59
  4. Step 4: Simplify right side
    210,845.43x = 40,587,014,325.33
  5. Step 5: Solve for x
    x = 40,587,014,325.33/210,845.43
  6. Step 6: Final answer
    x = 192,496.53

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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.