Home / 139,657,020.82-192,732,668.13-77,777,359.18

Finding the Fourth Proportional to 139,657,020.82, 192,732,668.13 and 77,777,359.18

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Solution

The fourth proportional to 139,657,020.82, 192,732,668.13 and 77,777,359.18 is: 107,336,085.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,657,020.82 : 192,732,668.13 = 77,777,359.18 : x
  2. Step 2: Convert to fraction form
    139,657,020.82/192,732,668.13 = 77,777,359.18/x
  3. Step 3: Cross multiply
    139,657,020.82x = 192,732,668.13 × 77,777,359.18
  4. Step 4: Simplify right side
    139,657,020.82x = 14,990,237,954,866,750
  5. Step 5: Solve for x
    x = 14,990,237,954,866,750/139,657,020.82
  6. Step 6: Final answer
    x = 107,336,085.70

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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.