Home / 117,986.70-176,688.45-78,329.10

Finding the Fourth Proportional to 117,986.70, 176,688.45 and 78,329.10

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Solution

The fourth proportional to 117,986.70, 176,688.45 and 78,329.10 is: 117,300.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,986.70 : 176,688.45 = 78,329.10 : x
  2. Step 2: Convert to fraction form
    117,986.70/176,688.45 = 78,329.10/x
  3. Step 3: Cross multiply
    117,986.70x = 176,688.45 × 78,329.10
  4. Step 4: Simplify right side
    117,986.70x = 13,839,847,268.90
  5. Step 5: Solve for x
    x = 13,839,847,268.90/117,986.70
  6. Step 6: Final answer
    x = 117,300.06

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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.