Home / 105,511.49-145,615.75-63,069.11

Finding the Fourth Proportional to 105,511.49, 145,615.75 and 63,069.11

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Solution

The fourth proportional to 105,511.49, 145,615.75 and 63,069.11 is: 87,041.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,511.49 : 145,615.75 = 63,069.11 : x
  2. Step 2: Convert to fraction form
    105,511.49/145,615.75 = 63,069.11/x
  3. Step 3: Cross multiply
    105,511.49x = 145,615.75 × 63,069.11
  4. Step 4: Simplify right side
    105,511.49x = 9,183,854,868.73
  5. Step 5: Solve for x
    x = 9,183,854,868.73/105,511.49
  6. Step 6: Final answer
    x = 87,041.28

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1.5x scale

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.