Home / 77,212.92-116,338.47-69,825.72

Finding the Fourth Proportional to 77,212.92, 116,338.47 and 69,825.72

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Solution

The fourth proportional to 77,212.92, 116,338.47 and 69,825.72 is: 105,208.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,212.92 : 116,338.47 = 69,825.72 : x
  2. Step 2: Convert to fraction form
    77,212.92/116,338.47 = 69,825.72/x
  3. Step 3: Cross multiply
    77,212.92x = 116,338.47 × 69,825.72
  4. Step 4: Simplify right side
    77,212.92x = 8,123,417,431.45
  5. Step 5: Solve for x
    x = 8,123,417,431.45/77,212.92
  6. Step 6: Final answer
    x = 105,208.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.