Home / 201,385.08-302,074.92-81,440.28

Finding the Fourth Proportional to 201,385.08, 302,074.92 and 81,440.28

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Solution

The fourth proportional to 201,385.08, 302,074.92 and 81,440.28 is: 122,159.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,385.08 : 302,074.92 = 81,440.28 : x
  2. Step 2: Convert to fraction form
    201,385.08/302,074.92 = 81,440.28/x
  3. Step 3: Cross multiply
    201,385.08x = 302,074.92 × 81,440.28
  4. Step 4: Simplify right side
    201,385.08x = 24,601,066,065.78
  5. Step 5: Solve for x
    x = 24,601,066,065.78/201,385.08
  6. Step 6: Final answer
    x = 122,159.33

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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.