Home / 76,160.56-105,101.40-42,170.80

Finding the Fourth Proportional to 76,160.56, 105,101.40 and 42,170.80

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Solution

The fourth proportional to 76,160.56, 105,101.40 and 42,170.80 is: 58,195.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,160.56 : 105,101.40 = 42,170.80 : x
  2. Step 2: Convert to fraction form
    76,160.56/105,101.40 = 42,170.80/x
  3. Step 3: Cross multiply
    76,160.56x = 105,101.40 × 42,170.80
  4. Step 4: Simplify right side
    76,160.56x = 4,432,210,119.12
  5. Step 5: Solve for x
    x = 4,432,210,119.12/76,160.56
  6. Step 6: Final answer
    x = 58,195.61

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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.