Home / 129,707.10-178,998.54-73,118.46

Finding the Fourth Proportional to 129,707.10, 178,998.54 and 73,118.46

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Solution

The fourth proportional to 129,707.10, 178,998.54 and 73,118.46 is: 100,905.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,707.10 : 178,998.54 = 73,118.46 : x
  2. Step 2: Convert to fraction form
    129,707.10/178,998.54 = 73,118.46/x
  3. Step 3: Cross multiply
    129,707.10x = 178,998.54 × 73,118.46
  4. Step 4: Simplify right side
    129,707.10x = 13,088,097,587.05
  5. Step 5: Solve for x
    x = 13,088,097,587.05/129,707.10
  6. Step 6: Final answer
    x = 100,905.02

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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.