Home / 146,869.20-220,303.80-139,287.60

Finding the Fourth Proportional to 146,869.20, 220,303.80 and 139,287.60

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Solution

The fourth proportional to 146,869.20, 220,303.80 and 139,287.60 is: 208,931.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,869.20 : 220,303.80 = 139,287.60 : x
  2. Step 2: Convert to fraction form
    146,869.20/220,303.80 = 139,287.60/x
  3. Step 3: Cross multiply
    146,869.20x = 220,303.80 × 139,287.60
  4. Step 4: Simplify right side
    146,869.20x = 30,685,587,572.88
  5. Step 5: Solve for x
    x = 30,685,587,572.88/146,869.20
  6. Step 6: Final answer
    x = 208,931.40

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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.