Home / 105,619.84-145,741.52-63,162.88

Finding the Fourth Proportional to 105,619.84, 145,741.52 and 63,162.88

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Solution

The fourth proportional to 105,619.84, 145,741.52 and 63,162.88 is: 87,156.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,619.84 : 145,741.52 = 63,162.88 : x
  2. Step 2: Convert to fraction form
    105,619.84/145,741.52 = 63,162.88/x
  3. Step 3: Cross multiply
    105,619.84x = 145,741.52 × 63,162.88
  4. Step 4: Simplify right side
    105,619.84x = 9,205,454,138.78
  5. Step 5: Solve for x
    x = 9,205,454,138.78/105,619.84
  6. Step 6: Final answer
    x = 87,156.49

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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.