Home / 142,131,776.42-213,197,640.30-77,489,941.88

Finding the Fourth Proportional to 142,131,776.42, 213,197,640.30 and 77,489,941.88

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Solution

The fourth proportional to 142,131,776.42, 213,197,640.30 and 77,489,941.88 is: 116,234,899.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,131,776.42 : 213,197,640.30 = 77,489,941.88 : x
  2. Step 2: Convert to fraction form
    142,131,776.42/213,197,640.30 = 77,489,941.88/x
  3. Step 3: Cross multiply
    142,131,776.42x = 213,197,640.30 × 77,489,941.88
  4. Step 4: Simplify right side
    142,131,776.42x = 16,520,672,754,734,158
  5. Step 5: Solve for x
    x = 16,520,672,754,734,158/142,131,776.42
  6. Step 6: Final answer
    x = 116,234,899.55

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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.