Home / 127,259.40-190,889.10-103,639.80

Finding the Fourth Proportional to 127,259.40, 190,889.10 and 103,639.80

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Solution

The fourth proportional to 127,259.40, 190,889.10 and 103,639.80 is: 155,459.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,259.40 : 190,889.10 = 103,639.80 : x
  2. Step 2: Convert to fraction form
    127,259.40/190,889.10 = 103,639.80/x
  3. Step 3: Cross multiply
    127,259.40x = 190,889.10 × 103,639.80
  4. Step 4: Simplify right side
    127,259.40x = 19,783,708,146.18
  5. Step 5: Solve for x
    x = 19,783,708,146.18/127,259.40
  6. Step 6: Final answer
    x = 155,459.70

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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.