Home / 134,782.68-186,002.82-78,197.70

Finding the Fourth Proportional to 134,782.68, 186,002.82 and 78,197.70

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Solution

The fourth proportional to 134,782.68, 186,002.82 and 78,197.70 is: 107,914.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,782.68 : 186,002.82 = 78,197.70 : x
  2. Step 2: Convert to fraction form
    134,782.68/186,002.82 = 78,197.70/x
  3. Step 3: Cross multiply
    134,782.68x = 186,002.82 × 78,197.70
  4. Step 4: Simplify right side
    134,782.68x = 14,544,992,717.51
  5. Step 5: Solve for x
    x = 14,544,992,717.51/134,782.68
  6. Step 6: Final answer
    x = 107,914.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.