Home / 134,109.20-201,293.40-81,621.20

Finding the Fourth Proportional to 134,109.20, 201,293.40 and 81,621.20

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Solution

The fourth proportional to 134,109.20, 201,293.40 and 81,621.20 is: 122,510.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,109.20 : 201,293.40 = 81,621.20 : x
  2. Step 2: Convert to fraction form
    134,109.20/201,293.40 = 81,621.20/x
  3. Step 3: Cross multiply
    134,109.20x = 201,293.40 × 81,621.20
  4. Step 4: Simplify right side
    134,109.20x = 16,429,808,860.08
  5. Step 5: Solve for x
    x = 16,429,808,860.08/134,109.20
  6. Step 6: Final answer
    x = 122,510.68

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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.