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Finding the Fourth Proportional to 134,409.76, 201,658.80 and 67,818.40

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Solution

The fourth proportional to 134,409.76, 201,658.80 and 67,818.40 is: 101,749.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,409.76 : 201,658.80 = 67,818.40 : x
  2. Step 2: Convert to fraction form
    134,409.76/201,658.80 = 67,818.40/x
  3. Step 3: Cross multiply
    134,409.76x = 201,658.80 × 67,818.40
  4. Step 4: Simplify right side
    134,409.76x = 13,676,177,161.92
  5. Step 5: Solve for x
    x = 13,676,177,161.92/134,409.76
  6. Step 6: Final answer
    x = 101,749.88

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1.5x scale

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.