Home / 145,123.20-217,477.12-82,664.64

Finding the Fourth Proportional to 145,123.20, 217,477.12 and 82,664.64

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Solution

The fourth proportional to 145,123.20, 217,477.12 and 82,664.64 is: 123,878.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,123.20 : 217,477.12 = 82,664.64 : x
  2. Step 2: Convert to fraction form
    145,123.20/217,477.12 = 82,664.64/x
  3. Step 3: Cross multiply
    145,123.20x = 217,477.12 × 82,664.64
  4. Step 4: Simplify right side
    145,123.20x = 17,977,667,833.04
  5. Step 5: Solve for x
    x = 17,977,667,833.04/145,123.20
  6. Step 6: Final answer
    x = 123,878.66

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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.