Home / 145,156,985.40-217,436,879.70-73,393,836.60

Finding the Fourth Proportional to 145,156,985.40, 217,436,879.70 and 73,393,836.60

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Solution

The fourth proportional to 145,156,985.40, 217,436,879.70 and 73,393,836.60 is: 109,939,778.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,156,985.40 : 217,436,879.70 = 73,393,836.60 : x
  2. Step 2: Convert to fraction form
    145,156,985.40/217,436,879.70 = 73,393,836.60/x
  3. Step 3: Cross multiply
    145,156,985.40x = 217,436,879.70 × 73,393,836.60
  4. Step 4: Simplify right side
    145,156,985.40x = 15,958,526,819,515,654
  5. Step 5: Solve for x
    x = 15,958,526,819,515,654/145,156,985.40
  6. Step 6: Final answer
    x = 109,939,778.48

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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.