Home / 105,187.10-145,152.78-57,431.24

Finding the Fourth Proportional to 105,187.10, 145,152.78 and 57,431.24

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Solution

The fourth proportional to 105,187.10, 145,152.78 and 57,431.24 is: 79,252.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,187.10 : 145,152.78 = 57,431.24 : x
  2. Step 2: Convert to fraction form
    105,187.10/145,152.78 = 57,431.24/x
  3. Step 3: Cross multiply
    105,187.10x = 145,152.78 × 57,431.24
  4. Step 4: Simplify right side
    105,187.10x = 8,336,304,144.85
  5. Step 5: Solve for x
    x = 8,336,304,144.85/105,187.10
  6. Step 6: Final answer
    x = 79,252.15

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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.