Home / 139,981.16-193,172.14-76,318.84

Finding the Fourth Proportional to 139,981.16, 193,172.14 and 76,318.84

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Solution

The fourth proportional to 139,981.16, 193,172.14 and 76,318.84 is: 105,318.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,981.16 : 193,172.14 = 76,318.84 : x
  2. Step 2: Convert to fraction form
    139,981.16/193,172.14 = 76,318.84/x
  3. Step 3: Cross multiply
    139,981.16x = 193,172.14 × 76,318.84
  4. Step 4: Simplify right side
    139,981.16x = 14,742,673,645.12
  5. Step 5: Solve for x
    x = 14,742,673,645.12/139,981.16
  6. Step 6: Final answer
    x = 105,318.98

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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.