Home / 145,008.33-217,509.18-85,414.83

Finding the Fourth Proportional to 145,008.33, 217,509.18 and 85,414.83

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Solution

The fourth proportional to 145,008.33, 217,509.18 and 85,414.83 is: 128,120.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,008.33 : 217,509.18 = 85,414.83 : x
  2. Step 2: Convert to fraction form
    145,008.33/217,509.18 = 85,414.83/x
  3. Step 3: Cross multiply
    145,008.33x = 217,509.18 × 85,414.83
  4. Step 4: Simplify right side
    145,008.33x = 18,578,509,633.14
  5. Step 5: Solve for x
    x = 18,578,509,633.14/145,008.33
  6. Step 6: Final answer
    x = 128,120.29

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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.