Home / 77,165.40-116,326.47-72,021.68

Finding the Fourth Proportional to 77,165.40, 116,326.47 and 72,021.68

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Solution

The fourth proportional to 77,165.40, 116,326.47 and 72,021.68 is: 108,572.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,165.40 : 116,326.47 = 72,021.68 : x
  2. Step 2: Convert to fraction form
    77,165.40/116,326.47 = 72,021.68/x
  3. Step 3: Cross multiply
    77,165.40x = 116,326.47 × 72,021.68
  4. Step 4: Simplify right side
    77,165.40x = 8,378,027,216.24
  5. Step 5: Solve for x
    x = 8,378,027,216.24/77,165.40
  6. Step 6: Final answer
    x = 108,572.33

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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.