Home / 117,438.19-176,156.81-42,540.80

Finding the Fourth Proportional to 117,438.19, 176,156.81 and 42,540.80

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Solution

The fourth proportional to 117,438.19, 176,156.81 and 42,540.80 is: 63,811.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,438.19 : 176,156.81 = 42,540.80 : x
  2. Step 2: Convert to fraction form
    117,438.19/176,156.81 = 42,540.80/x
  3. Step 3: Cross multiply
    117,438.19x = 176,156.81 × 42,540.80
  4. Step 4: Simplify right side
    117,438.19x = 7,493,851,850.54
  5. Step 5: Solve for x
    x = 7,493,851,850.54/117,438.19
  6. Step 6: Final answer
    x = 63,811.03

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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.