Home / 85,170.42-127,780.59-25,200.47

Finding the Fourth Proportional to 85,170.42, 127,780.59 and 25,200.47

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Solution

The fourth proportional to 85,170.42, 127,780.59 and 25,200.47 is: 37,808.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,170.42 : 127,780.59 = 25,200.47 : x
  2. Step 2: Convert to fraction form
    85,170.42/127,780.59 = 25,200.47/x
  3. Step 3: Cross multiply
    85,170.42x = 127,780.59 × 25,200.47
  4. Step 4: Simplify right side
    85,170.42x = 3,220,130,285.97
  5. Step 5: Solve for x
    x = 3,220,130,285.97/85,170.42
  6. Step 6: Final answer
    x = 37,808.08

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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.