Home / 105,645.87-145,790.69-57,901.23

Finding the Fourth Proportional to 105,645.87, 145,790.69 and 57,901.23

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Solution

The fourth proportional to 105,645.87, 145,790.69 and 57,901.23 is: 79,903.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,645.87 : 145,790.69 = 57,901.23 : x
  2. Step 2: Convert to fraction form
    105,645.87/145,790.69 = 57,901.23/x
  3. Step 3: Cross multiply
    105,645.87x = 145,790.69 × 57,901.23
  4. Step 4: Simplify right side
    105,645.87x = 8,441,459,984.04
  5. Step 5: Solve for x
    x = 8,441,459,984.04/105,645.87
  6. Step 6: Final answer
    x = 79,903.36

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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.