Home / 136,428.08-204,640.70-53,321.36

Finding the Fourth Proportional to 136,428.08, 204,640.70 and 53,321.36

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Solution

The fourth proportional to 136,428.08, 204,640.70 and 53,321.36 is: 79,981.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,428.08 : 204,640.70 = 53,321.36 : x
  2. Step 2: Convert to fraction form
    136,428.08/204,640.70 = 53,321.36/x
  3. Step 3: Cross multiply
    136,428.08x = 204,640.70 × 53,321.36
  4. Step 4: Simplify right side
    136,428.08x = 10,911,720,435.35
  5. Step 5: Solve for x
    x = 10,911,720,435.35/136,428.08
  6. Step 6: Final answer
    x = 79,981.49

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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.