Home / 105,115.10-145,059.24-57,369.50

Finding the Fourth Proportional to 105,115.10, 145,059.24 and 57,369.50

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Solution

The fourth proportional to 105,115.10, 145,059.24 and 57,369.50 is: 79,170.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,115.10 : 145,059.24 = 57,369.50 : x
  2. Step 2: Convert to fraction form
    105,115.10/145,059.24 = 57,369.50/x
  3. Step 3: Cross multiply
    105,115.10x = 145,059.24 × 57,369.50
  4. Step 4: Simplify right side
    105,115.10x = 8,321,976,069.18
  5. Step 5: Solve for x
    x = 8,321,976,069.18/105,115.10
  6. Step 6: Final answer
    x = 79,170.13

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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.