Home / 143,545,031.20-215,317,546.80-66,875,809.60

Finding the Fourth Proportional to 143,545,031.20, 215,317,546.80 and 66,875,809.60

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Solution

The fourth proportional to 143,545,031.20, 215,317,546.80 and 66,875,809.60 is: 100,313,714.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,545,031.20 : 215,317,546.80 = 66,875,809.60 : x
  2. Step 2: Convert to fraction form
    143,545,031.20/215,317,546.80 = 66,875,809.60/x
  3. Step 3: Cross multiply
    143,545,031.20x = 215,317,546.80 × 66,875,809.60
  4. Step 4: Simplify right side
    143,545,031.20x = 14,399,535,263,335,890
  5. Step 5: Solve for x
    x = 14,399,535,263,335,890/143,545,031.20
  6. Step 6: Final answer
    x = 100,313,714.40

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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.