Home / 105,511.12-145,615.24-63,068.74

Finding the Fourth Proportional to 105,511.12, 145,615.24 and 63,068.74

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Solution

The fourth proportional to 105,511.12, 145,615.24 and 63,068.74 is: 87,040.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,511.12 : 145,615.24 = 63,068.74 : x
  2. Step 2: Convert to fraction form
    105,511.12/145,615.24 = 63,068.74/x
  3. Step 3: Cross multiply
    105,511.12x = 145,615.24 × 63,068.74
  4. Step 4: Simplify right side
    105,511.12x = 9,183,769,711.60
  5. Step 5: Solve for x
    x = 9,183,769,711.60/105,511.12
  6. Step 6: Final answer
    x = 87,040.78

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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.