Home / 129,148.36-178,208.16-75,394.48

Finding the Fourth Proportional to 129,148.36, 178,208.16 and 75,394.48

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Solution

The fourth proportional to 129,148.36, 178,208.16 and 75,394.48 is: 104,034.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,148.36 : 178,208.16 = 75,394.48 : x
  2. Step 2: Convert to fraction form
    129,148.36/178,208.16 = 75,394.48/x
  3. Step 3: Cross multiply
    129,148.36x = 178,208.16 × 75,394.48
  4. Step 4: Simplify right side
    129,148.36x = 13,435,911,554.96
  5. Step 5: Solve for x
    x = 13,435,911,554.96/129,148.36
  6. Step 6: Final answer
    x = 104,034.71

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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.