Home / 139,988.25-193,177.31-76,325.49

Finding the Fourth Proportional to 139,988.25, 193,177.31 and 76,325.49

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Solution

The fourth proportional to 139,988.25, 193,177.31 and 76,325.49 is: 105,325.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,988.25 : 193,177.31 = 76,325.49 : x
  2. Step 2: Convert to fraction form
    139,988.25/193,177.31 = 76,325.49/x
  3. Step 3: Cross multiply
    139,988.25x = 193,177.31 × 76,325.49
  4. Step 4: Simplify right side
    139,988.25x = 14,744,352,461.00
  5. Step 5: Solve for x
    x = 14,744,352,461.00/139,988.25
  6. Step 6: Final answer
    x = 105,325.64

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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.