Home / 139,989.13-193,188.05-76,327.18

Finding the Fourth Proportional to 139,989.13, 193,188.05 and 76,327.18

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Solution

The fourth proportional to 139,989.13, 193,188.05 and 76,327.18 is: 105,333.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,989.13 : 193,188.05 = 76,327.18 : x
  2. Step 2: Convert to fraction form
    139,989.13/193,188.05 = 76,327.18/x
  3. Step 3: Cross multiply
    139,989.13x = 193,188.05 × 76,327.18
  4. Step 4: Simplify right side
    139,989.13x = 14,745,499,066.20
  5. Step 5: Solve for x
    x = 14,745,499,066.20/139,989.13
  6. Step 6: Final answer
    x = 105,333.17

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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.