Home / 138,852.55-191,616.47-75,190.33

Finding the Fourth Proportional to 138,852.55, 191,616.47 and 75,190.33

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Solution

The fourth proportional to 138,852.55, 191,616.47 and 75,190.33 is: 103,762.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,852.55 : 191,616.47 = 75,190.33 : x
  2. Step 2: Convert to fraction form
    138,852.55/191,616.47 = 75,190.33/x
  3. Step 3: Cross multiply
    138,852.55x = 191,616.47 × 75,190.33
  4. Step 4: Simplify right side
    138,852.55x = 14,407,705,039.71
  5. Step 5: Solve for x
    x = 14,407,705,039.71/138,852.55
  6. Step 6: Final answer
    x = 103,762.63

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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.