Home / 85,157.28-127,758.60-70,191.72

Finding the Fourth Proportional to 85,157.28, 127,758.60 and 70,191.72

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Solution

The fourth proportional to 85,157.28, 127,758.60 and 70,191.72 is: 105,306.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,157.28 : 127,758.60 = 70,191.72 : x
  2. Step 2: Convert to fraction form
    85,157.28/127,758.60 = 70,191.72/x
  3. Step 3: Cross multiply
    85,157.28x = 127,758.60 × 70,191.72
  4. Step 4: Simplify right side
    85,157.28x = 8,967,595,878.79
  5. Step 5: Solve for x
    x = 8,967,595,878.79/85,157.28
  6. Step 6: Final answer
    x = 105,306.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.