Home / 129,894.09-179,240.16-75,435.63

Finding the Fourth Proportional to 129,894.09, 179,240.16 and 75,435.63

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Solution

The fourth proportional to 129,894.09, 179,240.16 and 75,435.63 is: 104,093.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,894.09 : 179,240.16 = 75,435.63 : x
  2. Step 2: Convert to fraction form
    129,894.09/179,240.16 = 75,435.63/x
  3. Step 3: Cross multiply
    129,894.09x = 179,240.16 × 75,435.63
  4. Step 4: Simplify right side
    129,894.09x = 13,521,094,390.90
  5. Step 5: Solve for x
    x = 13,521,094,390.90/129,894.09
  6. Step 6: Final answer
    x = 104,093.22

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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.