Home / 124,120,977.40-171,204,872.16-77,630,518.72

Finding the Fourth Proportional to 124,120,977.40, 171,204,872.16 and 77,630,518.72

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Solution

The fourth proportional to 124,120,977.40, 171,204,872.16 and 77,630,518.72 is: 107,078,781.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,120,977.40 : 171,204,872.16 = 77,630,518.72 : x
  2. Step 2: Convert to fraction form
    124,120,977.40/171,204,872.16 = 77,630,518.72/x
  3. Step 3: Cross multiply
    124,120,977.40x = 171,204,872.16 × 77,630,518.72
  4. Step 4: Simplify right side
    124,120,977.40x = 13,290,723,033,172,086
  5. Step 5: Solve for x
    x = 13,290,723,033,172,086/124,120,977.40
  6. Step 6: Final answer
    x = 107,078,781.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.