Home / 126,935.40-190,172.70-103,434.60

Finding the Fourth Proportional to 126,935.40, 190,172.70 and 103,434.60

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Solution

The fourth proportional to 126,935.40, 190,172.70 and 103,434.60 is: 154,964.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,935.40 : 190,172.70 = 103,434.60 : x
  2. Step 2: Convert to fraction form
    126,935.40/190,172.70 = 103,434.60/x
  3. Step 3: Cross multiply
    126,935.40x = 190,172.70 × 103,434.60
  4. Step 4: Simplify right side
    126,935.40x = 19,670,437,155.42
  5. Step 5: Solve for x
    x = 19,670,437,155.42/126,935.40
  6. Step 6: Final answer
    x = 154,964.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.