Home / 78,004.90-117,007.35-77,227.30

Finding the Fourth Proportional to 78,004.90, 117,007.35 and 77,227.30

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Solution

The fourth proportional to 78,004.90, 117,007.35 and 77,227.30 is: 115,840.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,004.90 : 117,007.35 = 77,227.30 : x
  2. Step 2: Convert to fraction form
    78,004.90/117,007.35 = 77,227.30/x
  3. Step 3: Cross multiply
    78,004.90x = 117,007.35 × 77,227.30
  4. Step 4: Simplify right side
    78,004.90x = 9,036,161,720.66
  5. Step 5: Solve for x
    x = 9,036,161,720.66/78,004.90
  6. Step 6: Final answer
    x = 115,840.95

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1.5x scale

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.