Home / 129,129.69-178,186.73-119,608.04

Finding the Fourth Proportional to 129,129.69, 178,186.73 and 119,608.04

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Solution

The fourth proportional to 129,129.69, 178,186.73 and 119,608.04 is: 165,047.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,129.69 : 178,186.73 = 119,608.04 : x
  2. Step 2: Convert to fraction form
    129,129.69/178,186.73 = 119,608.04/x
  3. Step 3: Cross multiply
    129,129.69x = 178,186.73 × 119,608.04
  4. Step 4: Simplify right side
    129,129.69x = 21,312,565,529.31
  5. Step 5: Solve for x
    x = 21,312,565,529.31/129,129.69
  6. Step 6: Final answer
    x = 165,047.76

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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.