Home / 129,802.05-179,143.14-75,342.51

Finding the Fourth Proportional to 129,802.05, 179,143.14 and 75,342.51

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Solution

The fourth proportional to 129,802.05, 179,143.14 and 75,342.51 is: 103,982.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,802.05 : 179,143.14 = 75,342.51 : x
  2. Step 2: Convert to fraction form
    129,802.05/179,143.14 = 75,342.51/x
  3. Step 3: Cross multiply
    129,802.05x = 179,143.14 × 75,342.51
  4. Step 4: Simplify right side
    129,802.05x = 13,497,093,816.88
  5. Step 5: Solve for x
    x = 13,497,093,816.88/129,802.05
  6. Step 6: Final answer
    x = 103,982.13

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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.