Home / 208,147.65-312,346.01-89,818.96

Finding the Fourth Proportional to 208,147.65, 312,346.01 and 89,818.96

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Solution

The fourth proportional to 208,147.65, 312,346.01 and 89,818.96 is: 134,782.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,147.65 : 312,346.01 = 89,818.96 : x
  2. Step 2: Convert to fraction form
    208,147.65/312,346.01 = 89,818.96/x
  3. Step 3: Cross multiply
    208,147.65x = 312,346.01 × 89,818.96
  4. Step 4: Simplify right side
    208,147.65x = 28,054,593,778.35
  5. Step 5: Solve for x
    x = 28,054,593,778.35/208,147.65
  6. Step 6: Final answer
    x = 134,782.18

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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.