Home / 85,209.84-127,628.50-70,250.76

Finding the Fourth Proportional to 85,209.84, 127,628.50 and 70,250.76

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Solution

The fourth proportional to 85,209.84, 127,628.50 and 70,250.76 is: 105,222.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,209.84 : 127,628.50 = 70,250.76 : x
  2. Step 2: Convert to fraction form
    85,209.84/127,628.50 = 70,250.76/x
  3. Step 3: Cross multiply
    85,209.84x = 127,628.50 × 70,250.76
  4. Step 4: Simplify right side
    85,209.84x = 8,965,999,122.66
  5. Step 5: Solve for x
    x = 8,965,999,122.66/85,209.84
  6. Step 6: Final answer
    x = 105,222.58

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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.