Home / 105,185.99-145,154.63-57,439.73

Finding the Fourth Proportional to 105,185.99, 145,154.63 and 57,439.73

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Solution

The fourth proportional to 105,185.99, 145,154.63 and 57,439.73 is: 79,265.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,185.99 : 145,154.63 = 57,439.73 : x
  2. Step 2: Convert to fraction form
    105,185.99/145,154.63 = 57,439.73/x
  3. Step 3: Cross multiply
    105,185.99x = 145,154.63 × 57,439.73
  4. Step 4: Simplify right side
    105,185.99x = 8,337,643,261.94
  5. Step 5: Solve for x
    x = 8,337,643,261.94/105,185.99
  6. Step 6: Final answer
    x = 79,265.72

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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.