Home / 129,913.12-179,288.40-73,303.84

Finding the Fourth Proportional to 129,913.12, 179,288.40 and 73,303.84

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Solution

The fourth proportional to 129,913.12, 179,288.40 and 73,303.84 is: 101,163.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,913.12 : 179,288.40 = 73,303.84 : x
  2. Step 2: Convert to fraction form
    129,913.12/179,288.40 = 73,303.84/x
  3. Step 3: Cross multiply
    129,913.12x = 179,288.40 × 73,303.84
  4. Step 4: Simplify right side
    129,913.12x = 13,142,528,187.46
  5. Step 5: Solve for x
    x = 13,142,528,187.46/129,913.12
  6. Step 6: Final answer
    x = 101,163.98

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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.