Home / 208,108,321.53-287,207,119.67-115,317,935.61

Finding the Fourth Proportional to 208,108,321.53, 287,207,119.67 and 115,317,935.61

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Solution

The fourth proportional to 208,108,321.53, 287,207,119.67 and 115,317,935.61 is: 159,148,523.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,108,321.53 : 287,207,119.67 = 115,317,935.61 : x
  2. Step 2: Convert to fraction form
    208,108,321.53/287,207,119.67 = 115,317,935.61/x
  3. Step 3: Cross multiply
    208,108,321.53x = 287,207,119.67 × 115,317,935.61
  4. Step 4: Simplify right side
    208,108,321.53x = 33,120,132,132,838,628
  5. Step 5: Solve for x
    x = 33,120,132,132,838,628/208,108,321.53
  6. Step 6: Final answer
    x = 159,148,523.66

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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.