Home / 201,904.90-302,857.35-138,919.30

Finding the Fourth Proportional to 201,904.90, 302,857.35 and 138,919.30

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Solution

The fourth proportional to 201,904.90, 302,857.35 and 138,919.30 is: 208,378.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,904.90 : 302,857.35 = 138,919.30 : x
  2. Step 2: Convert to fraction form
    201,904.90/302,857.35 = 138,919.30/x
  3. Step 3: Cross multiply
    201,904.90x = 302,857.35 × 138,919.30
  4. Step 4: Simplify right side
    201,904.90x = 42,072,731,061.86
  5. Step 5: Solve for x
    x = 42,072,731,061.86/201,904.90
  6. Step 6: Final answer
    x = 208,378.95

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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.