Home / 208,271.84-312,343.18-75,134.80

Finding the Fourth Proportional to 208,271.84, 312,343.18 and 75,134.80

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Solution

The fourth proportional to 208,271.84, 312,343.18 and 75,134.80 is: 112,678.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,271.84 : 312,343.18 = 75,134.80 : x
  2. Step 2: Convert to fraction form
    208,271.84/312,343.18 = 75,134.80/x
  3. Step 3: Cross multiply
    208,271.84x = 312,343.18 × 75,134.80
  4. Step 4: Simplify right side
    208,271.84x = 23,467,842,360.66
  5. Step 5: Solve for x
    x = 23,467,842,360.66/208,271.84
  6. Step 6: Final answer
    x = 112,678.90

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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.