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Finding the Fourth Proportional to 144,085.68, 216,138.90 and 55,339.19

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Solution

The fourth proportional to 144,085.68, 216,138.90 and 55,339.19 is: 83,012.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,085.68 : 216,138.90 = 55,339.19 : x
  2. Step 2: Convert to fraction form
    144,085.68/216,138.90 = 55,339.19/x
  3. Step 3: Cross multiply
    144,085.68x = 216,138.90 × 55,339.19
  4. Step 4: Simplify right side
    144,085.68x = 11,960,951,653.49
  5. Step 5: Solve for x
    x = 11,960,951,653.49/144,085.68
  6. Step 6: Final answer
    x = 83,012.77

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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.