Home / 147,638.32-203,740.78-80,570.32

Finding the Fourth Proportional to 147,638.32, 203,740.78 and 80,570.32

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Solution

The fourth proportional to 147,638.32, 203,740.78 and 80,570.32 is: 111,186.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,638.32 : 203,740.78 = 80,570.32 : x
  2. Step 2: Convert to fraction form
    147,638.32/203,740.78 = 80,570.32/x
  3. Step 3: Cross multiply
    147,638.32x = 203,740.78 × 80,570.32
  4. Step 4: Simplify right side
    147,638.32x = 16,415,459,841.65
  5. Step 5: Solve for x
    x = 16,415,459,841.65/147,638.32
  6. Step 6: Final answer
    x = 111,186.99

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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.