Home / 199,981.20-299,485.80-106,280.40

Finding the Fourth Proportional to 199,981.20, 299,485.80 and 106,280.40

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Solution

The fourth proportional to 199,981.20, 299,485.80 and 106,280.40 is: 159,162.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,981.20 : 299,485.80 = 106,280.40 : x
  2. Step 2: Convert to fraction form
    199,981.20/299,485.80 = 106,280.40/x
  3. Step 3: Cross multiply
    199,981.20x = 299,485.80 × 106,280.40
  4. Step 4: Simplify right side
    199,981.20x = 31,829,470,618.32
  5. Step 5: Solve for x
    x = 31,829,470,618.32/199,981.20
  6. Step 6: Final answer
    x = 159,162.31

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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.