Home / 129,015.60-178,010.37-75,269.94

Finding the Fourth Proportional to 129,015.60, 178,010.37 and 75,269.94

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Solution

The fourth proportional to 129,015.60, 178,010.37 and 75,269.94 is: 103,854.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,015.60 : 178,010.37 = 75,269.94 : x
  2. Step 2: Convert to fraction form
    129,015.60/178,010.37 = 75,269.94/x
  3. Step 3: Cross multiply
    129,015.60x = 178,010.37 × 75,269.94
  4. Step 4: Simplify right side
    129,015.60x = 13,398,829,869.28
  5. Step 5: Solve for x
    x = 13,398,829,869.28/129,015.60
  6. Step 6: Final answer
    x = 103,854.34

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1.5x scale

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.