Home / 206,545.73-309,423.65-139,657.55

Finding the Fourth Proportional to 206,545.73, 309,423.65 and 139,657.55

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Solution

The fourth proportional to 206,545.73, 309,423.65 and 139,657.55 is: 209,219.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,545.73 : 309,423.65 = 139,657.55 : x
  2. Step 2: Convert to fraction form
    206,545.73/309,423.65 = 139,657.55/x
  3. Step 3: Cross multiply
    206,545.73x = 309,423.65 × 139,657.55
  4. Step 4: Simplify right side
    206,545.73x = 43,213,346,625.65
  5. Step 5: Solve for x
    x = 43,213,346,625.65/206,545.73
  6. Step 6: Final answer
    x = 209,219.27

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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.