Home / 122,477,419.16-169,018,542.52-66,723,297.72

Finding the Fourth Proportional to 122,477,419.16, 169,018,542.52 and 66,723,297.72

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Solution

The fourth proportional to 122,477,419.16, 169,018,542.52 and 66,723,297.72 is: 92,077,989.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,477,419.16 : 169,018,542.52 = 66,723,297.72 : x
  2. Step 2: Convert to fraction form
    122,477,419.16/169,018,542.52 = 66,723,297.72/x
  3. Step 3: Cross multiply
    122,477,419.16x = 169,018,542.52 × 66,723,297.72
  4. Step 4: Simplify right side
    122,477,419.16x = 11,277,474,531,917,348
  5. Step 5: Solve for x
    x = 11,277,474,531,917,348/122,477,419.16
  6. Step 6: Final answer
    x = 92,077,989.63

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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.