Home / 139,845.17-192,987.66-79,417.07

Finding the Fourth Proportional to 139,845.17, 192,987.66 and 79,417.07

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Solution

The fourth proportional to 139,845.17, 192,987.66 and 79,417.07 is: 109,596.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,845.17 : 192,987.66 = 79,417.07 : x
  2. Step 2: Convert to fraction form
    139,845.17/192,987.66 = 79,417.07/x
  3. Step 3: Cross multiply
    139,845.17x = 192,987.66 × 79,417.07
  4. Step 4: Simplify right side
    139,845.17x = 15,326,514,503.36
  5. Step 5: Solve for x
    x = 15,326,514,503.36/139,845.17
  6. Step 6: Final answer
    x = 109,596.31

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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.