Home / 126,887.40-190,100.70-103,386.60

Finding the Fourth Proportional to 126,887.40, 190,100.70 and 103,386.60

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Solution

The fourth proportional to 126,887.40, 190,100.70 and 103,386.60 is: 154,892.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,887.40 : 190,100.70 = 103,386.60 : x
  2. Step 2: Convert to fraction form
    126,887.40/190,100.70 = 103,386.60/x
  3. Step 3: Cross multiply
    126,887.40x = 190,100.70 × 103,386.60
  4. Step 4: Simplify right side
    126,887.40x = 19,653,865,030.62
  5. Step 5: Solve for x
    x = 19,653,865,030.62/126,887.40
  6. Step 6: Final answer
    x = 154,892.17

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1.5x scale

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.