Home / 99,079.58-136,725.49-56,640.85

Finding the Fourth Proportional to 99,079.58, 136,725.49 and 56,640.85

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Solution

The fourth proportional to 99,079.58, 136,725.49 and 56,640.85 is: 78,161.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,079.58 : 136,725.49 = 56,640.85 : x
  2. Step 2: Convert to fraction form
    99,079.58/136,725.49 = 56,640.85/x
  3. Step 3: Cross multiply
    99,079.58x = 136,725.49 × 56,640.85
  4. Step 4: Simplify right side
    99,079.58x = 7,744,247,970.27
  5. Step 5: Solve for x
    x = 7,744,247,970.27/99,079.58
  6. Step 6: Final answer
    x = 78,161.90

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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.