Home / 111,203,635.12-153,370,021.74-78,272,897.20

Finding the Fourth Proportional to 111,203,635.12, 153,370,021.74 and 78,272,897.20

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Solution

The fourth proportional to 111,203,635.12, 153,370,021.74 and 78,272,897.20 is: 107,952,549.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,203,635.12 : 153,370,021.74 = 78,272,897.20 : x
  2. Step 2: Convert to fraction form
    111,203,635.12/153,370,021.74 = 78,272,897.20/x
  3. Step 3: Cross multiply
    111,203,635.12x = 153,370,021.74 × 78,272,897.20
  4. Step 4: Simplify right side
    111,203,635.12x = 12,004,715,945,216,786
  5. Step 5: Solve for x
    x = 12,004,715,945,216,786/111,203,635.12
  6. Step 6: Final answer
    x = 107,952,549.68

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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.