Home / 210,545.55-315,917.93-109,289.79

Finding the Fourth Proportional to 210,545.55, 315,917.93 and 109,289.79

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Solution

The fourth proportional to 210,545.55, 315,917.93 and 109,289.79 is: 163,986.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,545.55 : 315,917.93 = 109,289.79 : x
  2. Step 2: Convert to fraction form
    210,545.55/315,917.93 = 109,289.79/x
  3. Step 3: Cross multiply
    210,545.55x = 315,917.93 × 109,289.79
  4. Step 4: Simplify right side
    210,545.55x = 34,526,604,500.16
  5. Step 5: Solve for x
    x = 34,526,604,500.16/210,545.55
  6. Step 6: Final answer
    x = 163,986.39

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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.