Home / 136,621.20-204,931.80-92,006.40

Finding the Fourth Proportional to 136,621.20, 204,931.80 and 92,006.40

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Solution

The fourth proportional to 136,621.20, 204,931.80 and 92,006.40 is: 138,009.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,621.20 : 204,931.80 = 92,006.40 : x
  2. Step 2: Convert to fraction form
    136,621.20/204,931.80 = 92,006.40/x
  3. Step 3: Cross multiply
    136,621.20x = 204,931.80 × 92,006.40
  4. Step 4: Simplify right side
    136,621.20x = 18,855,037,163.52
  5. Step 5: Solve for x
    x = 18,855,037,163.52/136,621.20
  6. Step 6: Final answer
    x = 138,009.60

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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.