Home / 137,921.35-190,331.62-77,491.95

Finding the Fourth Proportional to 137,921.35, 190,331.62 and 77,491.95

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Solution

The fourth proportional to 137,921.35, 190,331.62 and 77,491.95 is: 106,938.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,921.35 : 190,331.62 = 77,491.95 : x
  2. Step 2: Convert to fraction form
    137,921.35/190,331.62 = 77,491.95/x
  3. Step 3: Cross multiply
    137,921.35x = 190,331.62 × 77,491.95
  4. Step 4: Simplify right side
    137,921.35x = 14,749,168,380.46
  5. Step 5: Solve for x
    x = 14,749,168,380.46/137,921.35
  6. Step 6: Final answer
    x = 106,938.98

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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.