Home / 145,166,521.20-217,749,781.80-91,418,809.20

Finding the Fourth Proportional to 145,166,521.20, 217,749,781.80 and 91,418,809.20

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Solution

The fourth proportional to 145,166,521.20, 217,749,781.80 and 91,418,809.20 is: 137,128,213.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,166,521.20 : 217,749,781.80 = 91,418,809.20 : x
  2. Step 2: Convert to fraction form
    145,166,521.20/217,749,781.80 = 91,418,809.20/x
  3. Step 3: Cross multiply
    145,166,521.20x = 217,749,781.80 × 91,418,809.20
  4. Step 4: Simplify right side
    145,166,521.20x = 19,906,425,755,715,836
  5. Step 5: Solve for x
    x = 19,906,425,755,715,836/145,166,521.20
  6. Step 6: Final answer
    x = 137,128,213.80

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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.