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Finding the Fourth Proportional to 164,548.70, 246,831.15 and 85,816.70

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Solution

The fourth proportional to 164,548.70, 246,831.15 and 85,816.70 is: 128,729.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,548.70 : 246,831.15 = 85,816.70 : x
  2. Step 2: Convert to fraction form
    164,548.70/246,831.15 = 85,816.70/x
  3. Step 3: Cross multiply
    164,548.70x = 246,831.15 × 85,816.70
  4. Step 4: Simplify right side
    164,548.70x = 21,182,234,750.21
  5. Step 5: Solve for x
    x = 21,182,234,750.21/164,548.70
  6. Step 6: Final answer
    x = 128,729.27

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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.