Home / 126,424.35-189,573.04-42,154.68

Finding the Fourth Proportional to 126,424.35, 189,573.04 and 42,154.68

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Solution

The fourth proportional to 126,424.35, 189,573.04 and 42,154.68 is: 63,210.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,424.35 : 189,573.04 = 42,154.68 : x
  2. Step 2: Convert to fraction form
    126,424.35/189,573.04 = 42,154.68/x
  3. Step 3: Cross multiply
    126,424.35x = 189,573.04 × 42,154.68
  4. Step 4: Simplify right side
    126,424.35x = 7,991,390,837.83
  5. Step 5: Solve for x
    x = 7,991,390,837.83/126,424.35
  6. Step 6: Final answer
    x = 63,210.85

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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.