Home / 185,711.36-256,279.04-100,831.68

Finding the Fourth Proportional to 185,711.36, 256,279.04 and 100,831.68

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Solution

The fourth proportional to 185,711.36, 256,279.04 and 100,831.68 is: 139,146.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,711.36 : 256,279.04 = 100,831.68 : x
  2. Step 2: Convert to fraction form
    185,711.36/256,279.04 = 100,831.68/x
  3. Step 3: Cross multiply
    185,711.36x = 256,279.04 × 100,831.68
  4. Step 4: Simplify right side
    185,711.36x = 25,841,046,151.99
  5. Step 5: Solve for x
    x = 25,841,046,151.99/185,711.36
  6. Step 6: Final answer
    x = 139,146.29

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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.