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Finding the Fourth Proportional to 173,286.40, 239,155.95 and 105,314.44

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Solution

The fourth proportional to 173,286.40, 239,155.95 and 105,314.44 is: 145,346.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,286.40 : 239,155.95 = 105,314.44 : x
  2. Step 2: Convert to fraction form
    173,286.40/239,155.95 = 105,314.44/x
  3. Step 3: Cross multiply
    173,286.40x = 239,155.95 × 105,314.44
  4. Step 4: Simplify right side
    173,286.40x = 25,186,574,946.92
  5. Step 5: Solve for x
    x = 25,186,574,946.92/173,286.40
  6. Step 6: Final answer
    x = 145,346.52

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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.