Home / 208,840.80-313,358.40-109,113.60

Finding the Fourth Proportional to 208,840.80, 313,358.40 and 109,113.60

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Solution

The fourth proportional to 208,840.80, 313,358.40 and 109,113.60 is: 163,721.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,840.80 : 313,358.40 = 109,113.60 : x
  2. Step 2: Convert to fraction form
    208,840.80/313,358.40 = 109,113.60/x
  3. Step 3: Cross multiply
    208,840.80x = 313,358.40 × 109,113.60
  4. Step 4: Simplify right side
    208,840.80x = 34,191,663,114.24
  5. Step 5: Solve for x
    x = 34,191,663,114.24/208,840.80
  6. Step 6: Final answer
    x = 163,721.18

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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.