Home / 139,983.60-193,122.23-86,175.12

Finding the Fourth Proportional to 139,983.60, 193,122.23 and 86,175.12

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Solution

The fourth proportional to 139,983.60, 193,122.23 and 86,175.12 is: 118,887.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,983.60 : 193,122.23 = 86,175.12 : x
  2. Step 2: Convert to fraction form
    139,983.60/193,122.23 = 86,175.12/x
  3. Step 3: Cross multiply
    139,983.60x = 193,122.23 × 86,175.12
  4. Step 4: Simplify right side
    139,983.60x = 16,642,330,914.04
  5. Step 5: Solve for x
    x = 16,642,330,914.04/139,983.60
  6. Step 6: Final answer
    x = 118,887.72

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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.