Home / 85,145.36-127,710.16-40,156.40

Finding the Fourth Proportional to 85,145.36, 127,710.16 and 40,156.40

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Solution

The fourth proportional to 85,145.36, 127,710.16 and 40,156.40 is: 60,230.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,145.36 : 127,710.16 = 40,156.40 : x
  2. Step 2: Convert to fraction form
    85,145.36/127,710.16 = 40,156.40/x
  3. Step 3: Cross multiply
    85,145.36x = 127,710.16 × 40,156.40
  4. Step 4: Simplify right side
    85,145.36x = 5,128,380,269.02
  5. Step 5: Solve for x
    x = 5,128,380,269.02/85,145.36
  6. Step 6: Final answer
    x = 60,230.88

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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.