Home / 105,381.60-145,429.92-57,636.24

Finding the Fourth Proportional to 105,381.60, 145,429.92 and 57,636.24

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Solution

The fourth proportional to 105,381.60, 145,429.92 and 57,636.24 is: 79,539.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,381.60 : 145,429.92 = 57,636.24 : x
  2. Step 2: Convert to fraction form
    105,381.60/145,429.92 = 57,636.24/x
  3. Step 3: Cross multiply
    105,381.60x = 145,429.92 × 57,636.24
  4. Step 4: Simplify right side
    105,381.60x = 8,382,033,772.30
  5. Step 5: Solve for x
    x = 8,382,033,772.30/105,381.60
  6. Step 6: Final answer
    x = 79,539.82

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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.