Home / 129,754.48-179,057.28-72,395.32

Finding the Fourth Proportional to 129,754.48, 179,057.28 and 72,395.32

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Solution

The fourth proportional to 129,754.48, 179,057.28 and 72,395.32 is: 99,903.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,754.48 : 179,057.28 = 72,395.32 : x
  2. Step 2: Convert to fraction form
    129,754.48/179,057.28 = 72,395.32/x
  3. Step 3: Cross multiply
    129,754.48x = 179,057.28 × 72,395.32
  4. Step 4: Simplify right side
    129,754.48x = 12,962,909,083.93
  5. Step 5: Solve for x
    x = 12,962,909,083.93/129,754.48
  6. Step 6: Final answer
    x = 99,903.36

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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.