Home / 103,318.43-155,016.60-70,349.40

Finding the Fourth Proportional to 103,318.43, 155,016.60 and 70,349.40

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Solution

The fourth proportional to 103,318.43, 155,016.60 and 70,349.40 is: 105,550.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,318.43 : 155,016.60 = 70,349.40 : x
  2. Step 2: Convert to fraction form
    103,318.43/155,016.60 = 70,349.40/x
  3. Step 3: Cross multiply
    103,318.43x = 155,016.60 × 70,349.40
  4. Step 4: Simplify right side
    103,318.43x = 10,905,324,800.04
  5. Step 5: Solve for x
    x = 10,905,324,800.04/103,318.43
  6. Step 6: Final answer
    x = 105,550.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.