Home / 85,218.53-127,641.89-70,259.45

Finding the Fourth Proportional to 85,218.53, 127,641.89 and 70,259.45

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Solution

The fourth proportional to 85,218.53, 127,641.89 and 70,259.45 is: 105,235.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,218.53 : 127,641.89 = 70,259.45 : x
  2. Step 2: Convert to fraction form
    85,218.53/127,641.89 = 70,259.45/x
  3. Step 3: Cross multiply
    85,218.53x = 127,641.89 × 70,259.45
  4. Step 4: Simplify right side
    85,218.53x = 8,968,048,525.80
  5. Step 5: Solve for x
    x = 8,968,048,525.80/85,218.53
  6. Step 6: Final answer
    x = 105,235.90

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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.