Home / 142,267.20-213,400.80-79,929.60

Finding the Fourth Proportional to 142,267.20, 213,400.80 and 79,929.60

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Solution

The fourth proportional to 142,267.20, 213,400.80 and 79,929.60 is: 119,894.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,267.20 : 213,400.80 = 79,929.60 : x
  2. Step 2: Convert to fraction form
    142,267.20/213,400.80 = 79,929.60/x
  3. Step 3: Cross multiply
    142,267.20x = 213,400.80 × 79,929.60
  4. Step 4: Simplify right side
    142,267.20x = 17,057,040,583.68
  5. Step 5: Solve for x
    x = 17,057,040,583.68/142,267.20
  6. Step 6: Final answer
    x = 119,894.40

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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.