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Finding the Fourth Proportional to 98,764.56, 136,175.40 and 68,574.96

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Solution

The fourth proportional to 98,764.56, 136,175.40 and 68,574.96 is: 94,550.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,764.56 : 136,175.40 = 68,574.96 : x
  2. Step 2: Convert to fraction form
    98,764.56/136,175.40 = 68,574.96/x
  3. Step 3: Cross multiply
    98,764.56x = 136,175.40 × 68,574.96
  4. Step 4: Simplify right side
    98,764.56x = 9,338,222,607.98
  5. Step 5: Solve for x
    x = 9,338,222,607.98/98,764.56
  6. Step 6: Final answer
    x = 94,550.34

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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.