Home / 137,336.10-205,850.55-78,200.10

Finding the Fourth Proportional to 137,336.10, 205,850.55 and 78,200.10

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Solution

The fourth proportional to 137,336.10, 205,850.55 and 78,200.10 is: 117,212.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,336.10 : 205,850.55 = 78,200.10 : x
  2. Step 2: Convert to fraction form
    137,336.10/205,850.55 = 78,200.10/x
  3. Step 3: Cross multiply
    137,336.10x = 205,850.55 × 78,200.10
  4. Step 4: Simplify right side
    137,336.10x = 16,097,533,595.06
  5. Step 5: Solve for x
    x = 16,097,533,595.06/137,336.10
  6. Step 6: Final answer
    x = 117,212.69

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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.