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Finding the Fourth Proportional to 143,918.60, 215,853.60 and 38,714.16

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Solution

The fourth proportional to 143,918.60, 215,853.60 and 38,714.16 is: 58,064.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,918.60 : 215,853.60 = 38,714.16 : x
  2. Step 2: Convert to fraction form
    143,918.60/215,853.60 = 38,714.16/x
  3. Step 3: Cross multiply
    143,918.60x = 215,853.60 × 38,714.16
  4. Step 4: Simplify right side
    143,918.60x = 8,356,590,806.98
  5. Step 5: Solve for x
    x = 8,356,590,806.98/143,918.60
  6. Step 6: Final answer
    x = 58,064.70

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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.