Home / 78,732,138.30-118,098,207.45-21,230,222.10

Finding the Fourth Proportional to 78,732,138.30, 118,098,207.45 and 21,230,222.10

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Solution

The fourth proportional to 78,732,138.30, 118,098,207.45 and 21,230,222.10 is: 31,845,333.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,138.30 : 118,098,207.45 = 21,230,222.10 : x
  2. Step 2: Convert to fraction form
    78,732,138.30/118,098,207.45 = 21,230,222.10/x
  3. Step 3: Cross multiply
    78,732,138.30x = 118,098,207.45 × 21,230,222.10
  4. Step 4: Simplify right side
    78,732,138.30x = 2,507,251,173,775,375
  5. Step 5: Solve for x
    x = 2,507,251,173,775,375/78,732,138.30
  6. Step 6: Final answer
    x = 31,845,333.15

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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.