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Finding the Fourth Proportional to 98,108.32, 147,163.76 and 27,987.60

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Solution

The fourth proportional to 98,108.32, 147,163.76 and 27,987.60 is: 41,981.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,108.32 : 147,163.76 = 27,987.60 : x
  2. Step 2: Convert to fraction form
    98,108.32/147,163.76 = 27,987.60/x
  3. Step 3: Cross multiply
    98,108.32x = 147,163.76 × 27,987.60
  4. Step 4: Simplify right side
    98,108.32x = 4,118,760,449.38
  5. Step 5: Solve for x
    x = 4,118,760,449.38/98,108.32
  6. Step 6: Final answer
    x = 41,981.77

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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.