Home / 137,910.74-190,267.16-90,191.34

Finding the Fourth Proportional to 137,910.74, 190,267.16 and 90,191.34

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Solution

The fourth proportional to 137,910.74, 190,267.16 and 90,191.34 is: 124,431.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,910.74 : 190,267.16 = 90,191.34 : x
  2. Step 2: Convert to fraction form
    137,910.74/190,267.16 = 90,191.34/x
  3. Step 3: Cross multiply
    137,910.74x = 190,267.16 × 90,191.34
  4. Step 4: Simplify right side
    137,910.74x = 17,160,449,667.44
  5. Step 5: Solve for x
    x = 17,160,449,667.44/137,910.74
  6. Step 6: Final answer
    x = 124,431.57

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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.