Home / 128,173,469.64-191,941,339.85-89,654,625.96

Finding the Fourth Proportional to 128,173,469.64, 191,941,339.85 and 89,654,625.96

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Solution

The fourth proportional to 128,173,469.64, 191,941,339.85 and 89,654,625.96 is: 134,258,899.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,173,469.64 : 191,941,339.85 = 89,654,625.96 : x
  2. Step 2: Convert to fraction form
    128,173,469.64/191,941,339.85 = 89,654,625.96/x
  3. Step 3: Cross multiply
    128,173,469.64x = 191,941,339.85 × 89,654,625.96
  4. Step 4: Simplify right side
    128,173,469.64x = 17,208,429,030,512,990
  5. Step 5: Solve for x
    x = 17,208,429,030,512,990/128,173,469.64
  6. Step 6: Final answer
    x = 134,258,899.90

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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.