Home / 112,581,781.26-155,282,768.16-103,319,262.78

Finding the Fourth Proportional to 112,581,781.26, 155,282,768.16 and 103,319,262.78

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Solution

The fourth proportional to 112,581,781.26, 155,282,768.16 and 103,319,262.78 is: 142,507,081.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,581,781.26 : 155,282,768.16 = 103,319,262.78 : x
  2. Step 2: Convert to fraction form
    112,581,781.26/155,282,768.16 = 103,319,262.78/x
  3. Step 3: Cross multiply
    112,581,781.26x = 155,282,768.16 × 103,319,262.78
  4. Step 4: Simplify right side
    112,581,781.26x = 16,043,701,128,728,856
  5. Step 5: Solve for x
    x = 16,043,701,128,728,856/112,581,781.26
  6. Step 6: Final answer
    x = 142,507,081.96

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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.