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Finding the Fourth Proportional to 201,754.49, 278,421.18 and 111,109.67

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Solution

The fourth proportional to 201,754.49, 278,421.18 and 111,109.67 is: 153,331.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,754.49 : 278,421.18 = 111,109.67 : x
  2. Step 2: Convert to fraction form
    201,754.49/278,421.18 = 111,109.67/x
  3. Step 3: Cross multiply
    201,754.49x = 278,421.18 × 111,109.67
  4. Step 4: Simplify right side
    201,754.49x = 30,935,285,430.81
  5. Step 5: Solve for x
    x = 30,935,285,430.81/201,754.49
  6. Step 6: Final answer
    x = 153,331.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.