Home / 128,831.40-193,256.70-45,714.60

Finding the Fourth Proportional to 128,831.40, 193,256.70 and 45,714.60

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Solution

The fourth proportional to 128,831.40, 193,256.70 and 45,714.60 is: 68,575.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,831.40 : 193,256.70 = 45,714.60 : x
  2. Step 2: Convert to fraction form
    128,831.40/193,256.70 = 45,714.60/x
  3. Step 3: Cross multiply
    128,831.40x = 193,256.70 × 45,714.60
  4. Step 4: Simplify right side
    128,831.40x = 8,834,652,737.82
  5. Step 5: Solve for x
    x = 8,834,652,737.82/128,831.40
  6. Step 6: Final answer
    x = 68,575.31

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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.