Home / 78,408,093.15-117,612,139.73-75,432,023.55

Finding the Fourth Proportional to 78,408,093.15, 117,612,139.73 and 75,432,023.55

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Solution

The fourth proportional to 78,408,093.15, 117,612,139.73 and 75,432,023.55 is: 113,148,035.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,408,093.15 : 117,612,139.73 = 75,432,023.55 : x
  2. Step 2: Convert to fraction form
    78,408,093.15/117,612,139.73 = 75,432,023.55/x
  3. Step 3: Cross multiply
    78,408,093.15x = 117,612,139.73 × 75,432,023.55
  4. Step 4: Simplify right side
    78,408,093.15x = 8,871,721,693,502,090
  5. Step 5: Solve for x
    x = 8,871,721,693,502,090/78,408,093.15
  6. Step 6: Final answer
    x = 113,148,035.33

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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.