Home / 144,723.40-217,085.10-85,625.80

Finding the Fourth Proportional to 144,723.40, 217,085.10 and 85,625.80

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Solution

The fourth proportional to 144,723.40, 217,085.10 and 85,625.80 is: 128,438.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,723.40 : 217,085.10 = 85,625.80 : x
  2. Step 2: Convert to fraction form
    144,723.40/217,085.10 = 85,625.80/x
  3. Step 3: Cross multiply
    144,723.40x = 217,085.10 × 85,625.80
  4. Step 4: Simplify right side
    144,723.40x = 18,588,085,355.58
  5. Step 5: Solve for x
    x = 18,588,085,355.58/144,723.40
  6. Step 6: Final answer
    x = 128,438.70

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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.