Home / 101,479,745.86-140,042,140.80-55,070,000.21

Finding the Fourth Proportional to 101,479,745.86, 140,042,140.80 and 55,070,000.21

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Solution

The fourth proportional to 101,479,745.86, 140,042,140.80 and 55,070,000.21 is: 75,996,649.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,479,745.86 : 140,042,140.80 = 55,070,000.21 : x
  2. Step 2: Convert to fraction form
    101,479,745.86/140,042,140.80 = 55,070,000.21/x
  3. Step 3: Cross multiply
    101,479,745.86x = 140,042,140.80 × 55,070,000.21
  4. Step 4: Simplify right side
    101,479,745.86x = 7,712,120,723,264,850
  5. Step 5: Solve for x
    x = 7,712,120,723,264,850/101,479,745.86
  6. Step 6: Final answer
    x = 75,996,649.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.