Home / 140,403.18-193,756.32-79,979.40

Finding the Fourth Proportional to 140,403.18, 193,756.32 and 79,979.40

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Solution

The fourth proportional to 140,403.18, 193,756.32 and 79,979.40 is: 110,371.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,403.18 : 193,756.32 = 79,979.40 : x
  2. Step 2: Convert to fraction form
    140,403.18/193,756.32 = 79,979.40/x
  3. Step 3: Cross multiply
    140,403.18x = 193,756.32 × 79,979.40
  4. Step 4: Simplify right side
    140,403.18x = 15,496,514,219.81
  5. Step 5: Solve for x
    x = 15,496,514,219.81/140,403.18
  6. Step 6: Final answer
    x = 110,371.53

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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.