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Finding the Fourth Proportional to 173,368.80, 239,280 and 112,190.40

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Solution

The fourth proportional to 173,368.80, 239,280 and 112,190.40 is: 154,842.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,368.80 : 239,280 = 112,190.40 : x
  2. Step 2: Convert to fraction form
    173,368.80/239,280 = 112,190.40/x
  3. Step 3: Cross multiply
    173,368.80x = 239,280 × 112,190.40
  4. Step 4: Simplify right side
    173,368.80x = 26,844,918,912
  5. Step 5: Solve for x
    x = 26,844,918,912/173,368.80
  6. Step 6: Final answer
    x = 154,842.85

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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.