Home / 145,008,015.20-217,512,022.80-83,702,031.20

Finding the Fourth Proportional to 145,008,015.20, 217,512,022.80 and 83,702,031.20

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Solution

The fourth proportional to 145,008,015.20, 217,512,022.80 and 83,702,031.20 is: 125,553,046.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,008,015.20 : 217,512,022.80 = 83,702,031.20 : x
  2. Step 2: Convert to fraction form
    145,008,015.20/217,512,022.80 = 83,702,031.20/x
  3. Step 3: Cross multiply
    145,008,015.20x = 217,512,022.80 × 83,702,031.20
  4. Step 4: Simplify right side
    145,008,015.20x = 18,206,198,118,780,712
  5. Step 5: Solve for x
    x = 18,206,198,118,780,712/145,008,015.20
  6. Step 6: Final answer
    x = 125,553,046.80

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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.