Home / 105,115.04-145,059.19-57,369.40

Finding the Fourth Proportional to 105,115.04, 145,059.19 and 57,369.40

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Solution

The fourth proportional to 105,115.04, 145,059.19 and 57,369.40 is: 79,170.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,115.04 : 145,059.19 = 57,369.40 : x
  2. Step 2: Convert to fraction form
    105,115.04/145,059.19 = 57,369.40/x
  3. Step 3: Cross multiply
    105,115.04x = 145,059.19 × 57,369.40
  4. Step 4: Simplify right side
    105,115.04x = 8,321,958,694.79
  5. Step 5: Solve for x
    x = 8,321,958,694.79/105,115.04
  6. Step 6: Final answer
    x = 79,170.01

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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.