Home / 130,014.12-195,123.06-66,831.60

Finding the Fourth Proportional to 130,014.12, 195,123.06 and 66,831.60

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Solution

The fourth proportional to 130,014.12, 195,123.06 and 66,831.60 is: 100,299.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,014.12 : 195,123.06 = 66,831.60 : x
  2. Step 2: Convert to fraction form
    130,014.12/195,123.06 = 66,831.60/x
  3. Step 3: Cross multiply
    130,014.12x = 195,123.06 × 66,831.60
  4. Step 4: Simplify right side
    130,014.12x = 13,040,386,296.70
  5. Step 5: Solve for x
    x = 13,040,386,296.70/130,014.12
  6. Step 6: Final answer
    x = 100,299.77

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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.