Home / 105,628.68-145,765.14-57,880.98

Finding the Fourth Proportional to 105,628.68, 145,765.14 and 57,880.98

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Solution

The fourth proportional to 105,628.68, 145,765.14 and 57,880.98 is: 79,874.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,628.68 : 145,765.14 = 57,880.98 : x
  2. Step 2: Convert to fraction form
    105,628.68/145,765.14 = 57,880.98/x
  3. Step 3: Cross multiply
    105,628.68x = 145,765.14 × 57,880.98
  4. Step 4: Simplify right side
    105,628.68x = 8,437,029,153.04
  5. Step 5: Solve for x
    x = 8,437,029,153.04/105,628.68
  6. Step 6: Final answer
    x = 79,874.42

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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.