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Finding the Fourth Proportional to 144,305.06, 216,457.59 and 87,390.44

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Solution

The fourth proportional to 144,305.06, 216,457.59 and 87,390.44 is: 131,085.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,305.06 : 216,457.59 = 87,390.44 : x
  2. Step 2: Convert to fraction form
    144,305.06/216,457.59 = 87,390.44/x
  3. Step 3: Cross multiply
    144,305.06x = 216,457.59 × 87,390.44
  4. Step 4: Simplify right side
    144,305.06x = 18,916,322,949.15
  5. Step 5: Solve for x
    x = 18,916,322,949.15/144,305.06
  6. Step 6: Final answer
    x = 131,085.65

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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.