Home / 86,206,848.80-129,310,273.20-81,955,320.80

Finding the Fourth Proportional to 86,206,848.80, 129,310,273.20 and 81,955,320.80

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Solution

The fourth proportional to 86,206,848.80, 129,310,273.20 and 81,955,320.80 is: 122,932,981.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,206,848.80 : 129,310,273.20 = 81,955,320.80 : x
  2. Step 2: Convert to fraction form
    86,206,848.80/129,310,273.20 = 81,955,320.80/x
  3. Step 3: Cross multiply
    86,206,848.80x = 129,310,273.20 × 81,955,320.80
  4. Step 4: Simplify right side
    86,206,848.80x = 10,597,664,922,841,642
  5. Step 5: Solve for x
    x = 10,597,664,922,841,642/86,206,848.80
  6. Step 6: Final answer
    x = 122,932,981.20

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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.