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Finding the Fourth Proportional to 98,720.40, 148,080.60 and 27,642.90

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Solution

The fourth proportional to 98,720.40, 148,080.60 and 27,642.90 is: 41,464.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,720.40 : 148,080.60 = 27,642.90 : x
  2. Step 2: Convert to fraction form
    98,720.40/148,080.60 = 27,642.90/x
  3. Step 3: Cross multiply
    98,720.40x = 148,080.60 × 27,642.90
  4. Step 4: Simplify right side
    98,720.40x = 4,093,377,217.74
  5. Step 5: Solve for x
    x = 4,093,377,217.74/98,720.40
  6. Step 6: Final answer
    x = 41,464.35

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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.