Home / 129,083.81-178,152.37-72,495.19

Finding the Fourth Proportional to 129,083.81, 178,152.37 and 72,495.19

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Solution

The fourth proportional to 129,083.81, 178,152.37 and 72,495.19 is: 100,052.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,083.81 : 178,152.37 = 72,495.19 : x
  2. Step 2: Convert to fraction form
    129,083.81/178,152.37 = 72,495.19/x
  3. Step 3: Cross multiply
    129,083.81x = 178,152.37 × 72,495.19
  4. Step 4: Simplify right side
    129,083.81x = 12,915,189,285.48
  5. Step 5: Solve for x
    x = 12,915,189,285.48/129,083.81
  6. Step 6: Final answer
    x = 100,052.74

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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.