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Finding the Fourth Proportional to 104,256, 143,992.08 and 70,663.68

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Solution

The fourth proportional to 104,256, 143,992.08 and 70,663.68 is: 97,596.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,256 : 143,992.08 = 70,663.68 : x
  2. Step 2: Convert to fraction form
    104,256/143,992.08 = 70,663.68/x
  3. Step 3: Cross multiply
    104,256x = 143,992.08 × 70,663.68
  4. Step 4: Simplify right side
    104,256x = 10,175,010,263.65
  5. Step 5: Solve for x
    x = 10,175,010,263.65/104,256
  6. Step 6: Final answer
    x = 97,596.40

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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.