Home / 208,621.58-312,988.52-107,364.45

Finding the Fourth Proportional to 208,621.58, 312,988.52 and 107,364.45

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Solution

The fourth proportional to 208,621.58, 312,988.52 and 107,364.45 is: 161,075.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,621.58 : 312,988.52 = 107,364.45 : x
  2. Step 2: Convert to fraction form
    208,621.58/312,988.52 = 107,364.45/x
  3. Step 3: Cross multiply
    208,621.58x = 312,988.52 × 107,364.45
  4. Step 4: Simplify right side
    208,621.58x = 33,603,841,748.23
  5. Step 5: Solve for x
    x = 33,603,841,748.23/208,621.58
  6. Step 6: Final answer
    x = 161,075.58

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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.