Home / 208,930.20-313,445.70-68,681.40

Finding the Fourth Proportional to 208,930.20, 313,445.70 and 68,681.40

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Solution

The fourth proportional to 208,930.20, 313,445.70 and 68,681.40 is: 103,038.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,930.20 : 313,445.70 = 68,681.40 : x
  2. Step 2: Convert to fraction form
    208,930.20/313,445.70 = 68,681.40/x
  3. Step 3: Cross multiply
    208,930.20x = 313,445.70 × 68,681.40
  4. Step 4: Simplify right side
    208,930.20x = 21,527,889,499.98
  5. Step 5: Solve for x
    x = 21,527,889,499.98/208,930.20
  6. Step 6: Final answer
    x = 103,038.67

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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.