Home / 169,169,895,840.86-253,859,217,981.68-78,394,392,157.28

Finding the Fourth Proportional to 169,169,895,840.86, 253,859,217,981.68 and 78,394,392,157.28

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Solution

The fourth proportional to 169,169,895,840.86, 253,859,217,981.68 and 78,394,392,157.28 is: 117,639,955,905.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,169,895,840.86 : 253,859,217,981.68 = 78,394,392,157.28 : x
  2. Step 2: Convert to fraction form
    169,169,895,840.86/253,859,217,981.68 = 78,394,392,157.28/x
  3. Step 3: Cross multiply
    169,169,895,840.86x = 253,859,217,981.68 × 78,394,392,157.28
  4. Step 4: Simplify right side
    169,169,895,840.86x = 19,901,139,087,197,263,101,952
  5. Step 5: Solve for x
    x = 19,901,139,087,197,263,101,952/169,169,895,840.86
  6. Step 6: Final answer
    x = 117,639,955,905.15

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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.