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Finding the Fourth Proportional to 172,938.50, 238,655.13 and 93,450.50

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Solution

The fourth proportional to 172,938.50, 238,655.13 and 93,450.50 is: 128,961.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,938.50 : 238,655.13 = 93,450.50 : x
  2. Step 2: Convert to fraction form
    172,938.50/238,655.13 = 93,450.50/x
  3. Step 3: Cross multiply
    172,938.50x = 238,655.13 × 93,450.50
  4. Step 4: Simplify right side
    172,938.50x = 22,302,441,226.07
  5. Step 5: Solve for x
    x = 22,302,441,226.07/172,938.50
  6. Step 6: Final answer
    x = 128,961.69

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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.