Home / 126,661.33-189,994.29-42,405.76

Finding the Fourth Proportional to 126,661.33, 189,994.29 and 42,405.76

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Solution

The fourth proportional to 126,661.33, 189,994.29 and 42,405.76 is: 63,609.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,661.33 : 189,994.29 = 42,405.76 : x
  2. Step 2: Convert to fraction form
    126,661.33/189,994.29 = 42,405.76/x
  3. Step 3: Cross multiply
    126,661.33x = 189,994.29 × 42,405.76
  4. Step 4: Simplify right side
    126,661.33x = 8,056,852,263.11
  5. Step 5: Solve for x
    x = 8,056,852,263.11/126,661.33
  6. Step 6: Final answer
    x = 63,609.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.