Home / 139,860.17-193,000.32-79,422.83

Finding the Fourth Proportional to 139,860.17, 193,000.32 and 79,422.83

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Solution

The fourth proportional to 139,860.17, 193,000.32 and 79,422.83 is: 109,599.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,860.17 : 193,000.32 = 79,422.83 : x
  2. Step 2: Convert to fraction form
    139,860.17/193,000.32 = 79,422.83/x
  3. Step 3: Cross multiply
    139,860.17x = 193,000.32 × 79,422.83
  4. Step 4: Simplify right side
    139,860.17x = 15,328,631,364.06
  5. Step 5: Solve for x
    x = 15,328,631,364.06/139,860.17
  6. Step 6: Final answer
    x = 109,599.69

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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.