Home / 137,921.46-190,331.78-77,492.07

Finding the Fourth Proportional to 137,921.46, 190,331.78 and 77,492.07

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Solution

The fourth proportional to 137,921.46, 190,331.78 and 77,492.07 is: 106,939.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,921.46 : 190,331.78 = 77,492.07 : x
  2. Step 2: Convert to fraction form
    137,921.46/190,331.78 = 77,492.07/x
  3. Step 3: Cross multiply
    137,921.46x = 190,331.78 × 77,492.07
  4. Step 4: Simplify right side
    137,921.46x = 14,749,202,696.22
  5. Step 5: Solve for x
    x = 14,749,202,696.22/137,921.46
  6. Step 6: Final answer
    x = 106,939.14

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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.