Home / 100,683.28-138,945.58-54,746.04

Finding the Fourth Proportional to 100,683.28, 138,945.58 and 54,746.04

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Solution

The fourth proportional to 100,683.28, 138,945.58 and 54,746.04 is: 75,550.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,683.28 : 138,945.58 = 54,746.04 : x
  2. Step 2: Convert to fraction form
    100,683.28/138,945.58 = 54,746.04/x
  3. Step 3: Cross multiply
    100,683.28x = 138,945.58 × 54,746.04
  4. Step 4: Simplify right side
    100,683.28x = 7,606,720,280.50
  5. Step 5: Solve for x
    x = 7,606,720,280.50/100,683.28
  6. Step 6: Final answer
    x = 75,550.98

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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.