Home / 129,157,679.97-178,238,989.49-70,419,865.77

Finding the Fourth Proportional to 129,157,679.97, 178,238,989.49 and 70,419,865.77

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Solution

The fourth proportional to 129,157,679.97, 178,238,989.49 and 70,419,865.77 is: 97,180,173.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,157,679.97 : 178,238,989.49 = 70,419,865.77 : x
  2. Step 2: Convert to fraction form
    129,157,679.97/178,238,989.49 = 70,419,865.77/x
  3. Step 3: Cross multiply
    129,157,679.97x = 178,238,989.49 × 70,419,865.77
  4. Step 4: Simplify right side
    129,157,679.97x = 12,551,565,714,514,142
  5. Step 5: Solve for x
    x = 12,551,565,714,514,142/129,157,679.97
  6. Step 6: Final answer
    x = 97,180,173.24

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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.