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Finding the Fourth Proportional to 98,797.80, 147,764.70 and 88,343.40

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Solution

The fourth proportional to 98,797.80, 147,764.70 and 88,343.40 is: 132,128.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,797.80 : 147,764.70 = 88,343.40 : x
  2. Step 2: Convert to fraction form
    98,797.80/147,764.70 = 88,343.40/x
  3. Step 3: Cross multiply
    98,797.80x = 147,764.70 × 88,343.40
  4. Step 4: Simplify right side
    98,797.80x = 13,054,035,997.98
  5. Step 5: Solve for x
    x = 13,054,035,997.98/98,797.80
  6. Step 6: Final answer
    x = 132,128.81

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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.