Home / 139,514.16-192,525.52-79,090.40

Finding the Fourth Proportional to 139,514.16, 192,525.52 and 79,090.40

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Solution

The fourth proportional to 139,514.16, 192,525.52 and 79,090.40 is: 109,142.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,514.16 : 192,525.52 = 79,090.40 : x
  2. Step 2: Convert to fraction form
    139,514.16/192,525.52 = 79,090.40/x
  3. Step 3: Cross multiply
    139,514.16x = 192,525.52 × 79,090.40
  4. Step 4: Simplify right side
    139,514.16x = 15,226,920,387.01
  5. Step 5: Solve for x
    x = 15,226,920,387.01/139,514.16
  6. Step 6: Final answer
    x = 109,142.47

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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.