Home / 128,544,234.40-193,005,308.40-90,374,960.80

Finding the Fourth Proportional to 128,544,234.40, 193,005,308.40 and 90,374,960.80

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Solution

The fourth proportional to 128,544,234.40, 193,005,308.40 and 90,374,960.80 is: 135,695,290.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,544,234.40 : 193,005,308.40 = 90,374,960.80 : x
  2. Step 2: Convert to fraction form
    128,544,234.40/193,005,308.40 = 90,374,960.80/x
  3. Step 3: Cross multiply
    128,544,234.40x = 193,005,308.40 × 90,374,960.80
  4. Step 4: Simplify right side
    128,544,234.40x = 17,442,847,180,841,910
  5. Step 5: Solve for x
    x = 17,442,847,180,841,910/128,544,234.40
  6. Step 6: Final answer
    x = 135,695,290.13

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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.