Home / 78,214.36-116,315.39-75,723.20

Finding the Fourth Proportional to 78,214.36, 116,315.39 and 75,723.20

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Solution

The fourth proportional to 78,214.36, 116,315.39 and 75,723.20 is: 112,610.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,214.36 : 116,315.39 = 75,723.20 : x
  2. Step 2: Convert to fraction form
    78,214.36/116,315.39 = 75,723.20/x
  3. Step 3: Cross multiply
    78,214.36x = 116,315.39 × 75,723.20
  4. Step 4: Simplify right side
    78,214.36x = 8,807,774,238.24
  5. Step 5: Solve for x
    x = 8,807,774,238.24/78,214.36
  6. Step 6: Final answer
    x = 112,610.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.