Home / 201,678.12-302,478.30-61,418.52

Finding the Fourth Proportional to 201,678.12, 302,478.30 and 61,418.52

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Solution

The fourth proportional to 201,678.12, 302,478.30 and 61,418.52 is: 92,115.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,678.12 : 302,478.30 = 61,418.52 : x
  2. Step 2: Convert to fraction form
    201,678.12/302,478.30 = 61,418.52/x
  3. Step 3: Cross multiply
    201,678.12x = 302,478.30 × 61,418.52
  4. Step 4: Simplify right side
    201,678.12x = 18,577,769,518.12
  5. Step 5: Solve for x
    x = 18,577,769,518.12/201,678.12
  6. Step 6: Final answer
    x = 92,115.94

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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.