Home / 145,028.20-217,542.30-85,833.40

Finding the Fourth Proportional to 145,028.20, 217,542.30 and 85,833.40

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Solution

The fourth proportional to 145,028.20, 217,542.30 and 85,833.40 is: 128,750.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,028.20 : 217,542.30 = 85,833.40 : x
  2. Step 2: Convert to fraction form
    145,028.20/217,542.30 = 85,833.40/x
  3. Step 3: Cross multiply
    145,028.20x = 217,542.30 × 85,833.40
  4. Step 4: Simplify right side
    145,028.20x = 18,672,395,252.82
  5. Step 5: Solve for x
    x = 18,672,395,252.82/145,028.20
  6. Step 6: Final answer
    x = 128,750.10

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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.