Home / 126,628.48-189,848.40-42,338.74

Finding the Fourth Proportional to 126,628.48, 189,848.40 and 42,338.74

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Solution

The fourth proportional to 126,628.48, 189,848.40 and 42,338.74 is: 63,476.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,628.48 : 189,848.40 = 42,338.74 : x
  2. Step 2: Convert to fraction form
    126,628.48/189,848.40 = 42,338.74/x
  3. Step 3: Cross multiply
    126,628.48x = 189,848.40 × 42,338.74
  4. Step 4: Simplify right side
    126,628.48x = 8,037,942,047.02
  5. Step 5: Solve for x
    x = 8,037,942,047.02/126,628.48
  6. Step 6: Final answer
    x = 63,476.57

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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.