Home / 105,288.87-145,298.70-57,542.22

Finding the Fourth Proportional to 105,288.87, 145,298.70 and 57,542.22

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Solution

The fourth proportional to 105,288.87, 145,298.70 and 57,542.22 is: 79,408.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,288.87 : 145,298.70 = 57,542.22 : x
  2. Step 2: Convert to fraction form
    105,288.87/145,298.70 = 57,542.22/x
  3. Step 3: Cross multiply
    105,288.87x = 145,298.70 × 57,542.22
  4. Step 4: Simplify right side
    105,288.87x = 8,360,809,761.11
  5. Step 5: Solve for x
    x = 8,360,809,761.11/105,288.87
  6. Step 6: Final answer
    x = 79,408.30

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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.