Home / 111,228,117.66-166,938,229.53-77,173,378.38

Finding the Fourth Proportional to 111,228,117.66, 166,938,229.53 and 77,173,378.38

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Solution

The fourth proportional to 111,228,117.66, 166,938,229.53 and 77,173,378.38 is: 115,826,712.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,228,117.66 : 166,938,229.53 = 77,173,378.38 : x
  2. Step 2: Convert to fraction form
    111,228,117.66/166,938,229.53 = 77,173,378.38/x
  3. Step 3: Cross multiply
    111,228,117.66x = 166,938,229.53 × 77,173,378.38
  4. Step 4: Simplify right side
    111,228,117.66x = 12,883,187,153,605,978
  5. Step 5: Solve for x
    x = 12,883,187,153,605,978/111,228,117.66
  6. Step 6: Final answer
    x = 115,826,712.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.