Home / 74,998.20-112,497.30-70,915.80

Finding the Fourth Proportional to 74,998.20, 112,497.30 and 70,915.80

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Solution

The fourth proportional to 74,998.20, 112,497.30 and 70,915.80 is: 106,373.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,998.20 : 112,497.30 = 70,915.80 : x
  2. Step 2: Convert to fraction form
    74,998.20/112,497.30 = 70,915.80/x
  3. Step 3: Cross multiply
    74,998.20x = 112,497.30 × 70,915.80
  4. Step 4: Simplify right side
    74,998.20x = 7,977,836,027.34
  5. Step 5: Solve for x
    x = 7,977,836,027.34/74,998.20
  6. Step 6: Final answer
    x = 106,373.70

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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.