Home / 81,196.74-121,831.47-51,606.90

Finding the Fourth Proportional to 81,196.74, 121,831.47 and 51,606.90

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Solution

The fourth proportional to 81,196.74, 121,831.47 and 51,606.90 is: 77,433.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,196.74 : 121,831.47 = 51,606.90 : x
  2. Step 2: Convert to fraction form
    81,196.74/121,831.47 = 51,606.90/x
  3. Step 3: Cross multiply
    81,196.74x = 121,831.47 × 51,606.90
  4. Step 4: Simplify right side
    81,196.74x = 6,287,344,489.14
  5. Step 5: Solve for x
    x = 6,287,344,489.14/81,196.74
  6. Step 6: Final answer
    x = 77,433.46

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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.