Home / 78,912,374.60-118,049,697.30-68,248,125.20

Finding the Fourth Proportional to 78,912,374.60, 118,049,697.30 and 68,248,125.20

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Solution

The fourth proportional to 78,912,374.60, 118,049,697.30 and 68,248,125.20 is: 102,096,414.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,912,374.60 : 118,049,697.30 = 68,248,125.20 : x
  2. Step 2: Convert to fraction form
    78,912,374.60/118,049,697.30 = 68,248,125.20/x
  3. Step 3: Cross multiply
    78,912,374.60x = 118,049,697.30 × 68,248,125.20
  4. Step 4: Simplify right side
    78,912,374.60x = 8,056,670,521,152,502
  5. Step 5: Solve for x
    x = 8,056,670,521,152,502/78,912,374.60
  6. Step 6: Final answer
    x = 102,096,414.69

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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.