Home / 127,240.14-190,831.05-57,139.50

Finding the Fourth Proportional to 127,240.14, 190,831.05 and 57,139.50

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Solution

The fourth proportional to 127,240.14, 190,831.05 and 57,139.50 is: 85,696.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,240.14 : 190,831.05 = 57,139.50 : x
  2. Step 2: Convert to fraction form
    127,240.14/190,831.05 = 57,139.50/x
  3. Step 3: Cross multiply
    127,240.14x = 190,831.05 × 57,139.50
  4. Step 4: Simplify right side
    127,240.14x = 10,903,990,781.48
  5. Step 5: Solve for x
    x = 10,903,990,781.48/127,240.14
  6. Step 6: Final answer
    x = 85,696.16

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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.