Home / 85,217.59-127,640.48-70,258.51

Finding the Fourth Proportional to 85,217.59, 127,640.48 and 70,258.51

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Solution

The fourth proportional to 85,217.59, 127,640.48 and 70,258.51 is: 105,234.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,217.59 : 127,640.48 = 70,258.51 : x
  2. Step 2: Convert to fraction form
    85,217.59/127,640.48 = 70,258.51/x
  3. Step 3: Cross multiply
    85,217.59x = 127,640.48 × 70,258.51
  4. Step 4: Simplify right side
    85,217.59x = 8,967,829,797.03
  5. Step 5: Solve for x
    x = 8,967,829,797.03/85,217.59
  6. Step 6: Final answer
    x = 105,234.50

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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.