Home / 105,181.56-145,153.08-57,434.49

Finding the Fourth Proportional to 105,181.56, 145,153.08 and 57,434.49

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Solution

The fourth proportional to 105,181.56, 145,153.08 and 57,434.49 is: 79,260.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,181.56 : 145,153.08 = 57,434.49 : x
  2. Step 2: Convert to fraction form
    105,181.56/145,153.08 = 57,434.49/x
  3. Step 3: Cross multiply
    105,181.56x = 145,153.08 × 57,434.49
  4. Step 4: Simplify right side
    105,181.56x = 8,336,793,121.73
  5. Step 5: Solve for x
    x = 8,336,793,121.73/105,181.56
  6. Step 6: Final answer
    x = 79,260.98

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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.