Home / 144,785.10-217,076.40-85,590.30

Finding the Fourth Proportional to 144,785.10, 217,076.40 and 85,590.30

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Solution

The fourth proportional to 144,785.10, 217,076.40 and 85,590.30 is: 128,325.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,785.10 : 217,076.40 = 85,590.30 : x
  2. Step 2: Convert to fraction form
    144,785.10/217,076.40 = 85,590.30/x
  3. Step 3: Cross multiply
    144,785.10x = 217,076.40 × 85,590.30
  4. Step 4: Simplify right side
    144,785.10x = 18,579,634,198.92
  5. Step 5: Solve for x
    x = 18,579,634,198.92/144,785.10
  6. Step 6: Final answer
    x = 128,325.60

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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.