Home / 141,803.56-195,693.08-78,145.45

Finding the Fourth Proportional to 141,803.56, 195,693.08 and 78,145.45

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Solution

The fourth proportional to 141,803.56, 195,693.08 and 78,145.45 is: 107,843.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,803.56 : 195,693.08 = 78,145.45 : x
  2. Step 2: Convert to fraction form
    141,803.56/195,693.08 = 78,145.45/x
  3. Step 3: Cross multiply
    141,803.56x = 195,693.08 × 78,145.45
  4. Step 4: Simplify right side
    141,803.56x = 15,292,523,798.49
  5. Step 5: Solve for x
    x = 15,292,523,798.49/141,803.56
  6. Step 6: Final answer
    x = 107,843.02

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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.