Home / 155,978,305.77-215,262,180.95-86,370,163.05

Finding the Fourth Proportional to 155,978,305.77, 215,262,180.95 and 86,370,163.05

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Solution

The fourth proportional to 155,978,305.77, 215,262,180.95 and 86,370,163.05 is: 119,197,535.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,978,305.77 : 215,262,180.95 = 86,370,163.05 : x
  2. Step 2: Convert to fraction form
    155,978,305.77/215,262,180.95 = 86,370,163.05/x
  3. Step 3: Cross multiply
    155,978,305.77x = 215,262,180.95 × 86,370,163.05
  4. Step 4: Simplify right side
    155,978,305.77x = 18,592,229,666,718,252
  5. Step 5: Solve for x
    x = 18,592,229,666,718,252/155,978,305.77
  6. Step 6: Final answer
    x = 119,197,535.68

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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.