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Finding the Fourth Proportional to 173,430, 239,333.40 and 93,942

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Solution

The fourth proportional to 173,430, 239,333.40 and 93,942 is: 129,639.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,430 : 239,333.40 = 93,942 : x
  2. Step 2: Convert to fraction form
    173,430/239,333.40 = 93,942/x
  3. Step 3: Cross multiply
    173,430x = 239,333.40 × 93,942
  4. Step 4: Simplify right side
    173,430x = 22,483,458,262.80
  5. Step 5: Solve for x
    x = 22,483,458,262.80/173,430
  6. Step 6: Final answer
    x = 129,639.96

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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.