Home / 139,989.30-193,186.14-76,328.16

Finding the Fourth Proportional to 139,989.30, 193,186.14 and 76,328.16

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Solution

The fourth proportional to 139,989.30, 193,186.14 and 76,328.16 is: 105,333.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,989.30 : 193,186.14 = 76,328.16 : x
  2. Step 2: Convert to fraction form
    139,989.30/193,186.14 = 76,328.16/x
  3. Step 3: Cross multiply
    139,989.30x = 193,186.14 × 76,328.16
  4. Step 4: Simplify right side
    139,989.30x = 14,745,542,603.70
  5. Step 5: Solve for x
    x = 14,745,542,603.70/139,989.30
  6. Step 6: Final answer
    x = 105,333.35

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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.