Home / 159,718,249.20-220,411,332-86,379,391.20

Finding the Fourth Proportional to 159,718,249.20, 220,411,332 and 86,379,391.20

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Solution

The fourth proportional to 159,718,249.20, 220,411,332 and 86,379,391.20 is: 119,203,639.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,718,249.20 : 220,411,332 = 86,379,391.20 : x
  2. Step 2: Convert to fraction form
    159,718,249.20/220,411,332 = 86,379,391.20/x
  3. Step 3: Cross multiply
    159,718,249.20x = 220,411,332 × 86,379,391.20
  4. Step 4: Simplify right side
    159,718,249.20x = 19,038,996,671,741,080
  5. Step 5: Solve for x
    x = 19,038,996,671,741,080/159,718,249.20
  6. Step 6: Final answer
    x = 119,203,639.95

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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.