Home / 139,869.38-193,017.28-76,207.62

Finding the Fourth Proportional to 139,869.38, 193,017.28 and 76,207.62

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Solution

The fourth proportional to 139,869.38, 193,017.28 and 76,207.62 is: 105,165.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,869.38 : 193,017.28 = 76,207.62 : x
  2. Step 2: Convert to fraction form
    139,869.38/193,017.28 = 76,207.62/x
  3. Step 3: Cross multiply
    139,869.38x = 193,017.28 × 76,207.62
  4. Step 4: Simplify right side
    139,869.38x = 14,709,387,527.67
  5. Step 5: Solve for x
    x = 14,709,387,527.67/139,869.38
  6. Step 6: Final answer
    x = 105,165.17

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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.