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Finding the Fourth Proportional to 172,907.65, 238,607.80 and 96,429.07

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Solution

The fourth proportional to 172,907.65, 238,607.80 and 96,429.07 is: 133,069.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,907.65 : 238,607.80 = 96,429.07 : x
  2. Step 2: Convert to fraction form
    172,907.65/238,607.80 = 96,429.07/x
  3. Step 3: Cross multiply
    172,907.65x = 238,607.80 × 96,429.07
  4. Step 4: Simplify right side
    172,907.65x = 23,008,728,248.75
  5. Step 5: Solve for x
    x = 23,008,728,248.75/172,907.65
  6. Step 6: Final answer
    x = 133,069.46

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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.