Home / 107,421.42-148,105.26-76,831.34

Finding the Fourth Proportional to 107,421.42, 148,105.26 and 76,831.34

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Solution

The fourth proportional to 107,421.42, 148,105.26 and 76,831.34 is: 105,929.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,421.42 : 148,105.26 = 76,831.34 : x
  2. Step 2: Convert to fraction form
    107,421.42/148,105.26 = 76,831.34/x
  3. Step 3: Cross multiply
    107,421.42x = 148,105.26 × 76,831.34
  4. Step 4: Simplify right side
    107,421.42x = 11,379,125,586.85
  5. Step 5: Solve for x
    x = 11,379,125,586.85/107,421.42
  6. Step 6: Final answer
    x = 105,929.76

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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.