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Finding the Fourth Proportional to 144,175.56, 216,110.25 and 85,039.08

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Solution

The fourth proportional to 144,175.56, 216,110.25 and 85,039.08 is: 127,468.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,175.56 : 216,110.25 = 85,039.08 : x
  2. Step 2: Convert to fraction form
    144,175.56/216,110.25 = 85,039.08/x
  3. Step 3: Cross multiply
    144,175.56x = 216,110.25 × 85,039.08
  4. Step 4: Simplify right side
    144,175.56x = 18,377,816,838.57
  5. Step 5: Solve for x
    x = 18,377,816,838.57/144,175.56
  6. Step 6: Final answer
    x = 127,468.32

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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.