Home / 155,938,237.32-215,196,468.09-86,324,780.73

Finding the Fourth Proportional to 155,938,237.32, 215,196,468.09 and 86,324,780.73

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Solution

The fourth proportional to 155,938,237.32, 215,196,468.09 and 86,324,780.73 is: 119,129,138.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,938,237.32 : 215,196,468.09 = 86,324,780.73 : x
  2. Step 2: Convert to fraction form
    155,938,237.32/215,196,468.09 = 86,324,780.73/x
  3. Step 3: Cross multiply
    155,938,237.32x = 215,196,468.09 × 86,324,780.73
  4. Step 4: Simplify right side
    155,938,237.32x = 18,576,787,922,222,960
  5. Step 5: Solve for x
    x = 18,576,787,922,222,960/155,938,237.32
  6. Step 6: Final answer
    x = 119,129,138.82

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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.