Home / 145,013,612.20-217,520,418.30-83,707,628.20

Finding the Fourth Proportional to 145,013,612.20, 217,520,418.30 and 83,707,628.20

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Solution

The fourth proportional to 145,013,612.20, 217,520,418.30 and 83,707,628.20 is: 125,561,442.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,013,612.20 : 217,520,418.30 = 83,707,628.20 : x
  2. Step 2: Convert to fraction form
    145,013,612.20/217,520,418.30 = 83,707,628.20/x
  3. Step 3: Cross multiply
    145,013,612.20x = 217,520,418.30 × 83,707,628.20
  4. Step 4: Simplify right side
    145,013,612.20x = 18,208,118,300,964,876
  5. Step 5: Solve for x
    x = 18,208,118,300,964,876/145,013,612.20
  6. Step 6: Final answer
    x = 125,561,442.30

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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.