Home / 78,732,093.15-118,098,139.73-71,198,916.98

Finding the Fourth Proportional to 78,732,093.15, 118,098,139.73 and 71,198,916.98

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Solution

The fourth proportional to 78,732,093.15, 118,098,139.73 and 71,198,916.98 is: 106,798,375.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,093.15 : 118,098,139.73 = 71,198,916.98 : x
  2. Step 2: Convert to fraction form
    78,732,093.15/118,098,139.73 = 71,198,916.98/x
  3. Step 3: Cross multiply
    78,732,093.15x = 118,098,139.73 × 71,198,916.98
  4. Step 4: Simplify right side
    78,732,093.15x = 8,408,459,645,182,223
  5. Step 5: Solve for x
    x = 8,408,459,645,182,223/78,732,093.15
  6. Step 6: Final answer
    x = 106,798,375.46

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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.