Home / 84,185,613-115,332,359.88-81,038,142.44

Finding the Fourth Proportional to 84,185,613, 115,332,359.88 and 81,038,142.44

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Solution

The fourth proportional to 84,185,613, 115,332,359.88 and 81,038,142.44 is: 111,020,397.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,185,613 : 115,332,359.88 = 81,038,142.44 : x
  2. Step 2: Convert to fraction form
    84,185,613/115,332,359.88 = 81,038,142.44/x
  3. Step 3: Cross multiply
    84,185,613x = 115,332,359.88 × 81,038,142.44
  4. Step 4: Simplify right side
    84,185,613x = 9,346,320,207,896,780
  5. Step 5: Solve for x
    x = 9,346,320,207,896,780/84,185,613
  6. Step 6: Final answer
    x = 111,020,397.37

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.