Home / 117,880.20-176,705.10-105,438.60

Finding the Fourth Proportional to 117,880.20, 176,705.10 and 105,438.60

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Solution

The fourth proportional to 117,880.20, 176,705.10 and 105,438.60 is: 158,054.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,880.20 : 176,705.10 = 105,438.60 : x
  2. Step 2: Convert to fraction form
    117,880.20/176,705.10 = 105,438.60/x
  3. Step 3: Cross multiply
    117,880.20x = 176,705.10 × 105,438.60
  4. Step 4: Simplify right side
    117,880.20x = 18,631,538,356.86
  5. Step 5: Solve for x
    x = 18,631,538,356.86/117,880.20
  6. Step 6: Final answer
    x = 158,054.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.