Home / 128,405,354.26-192,567,571.88-42,123,655.30

Finding the Fourth Proportional to 128,405,354.26, 192,567,571.88 and 42,123,655.30

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Solution

The fourth proportional to 128,405,354.26, 192,567,571.88 and 42,123,655.30 is: 63,172,210.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,405,354.26 : 192,567,571.88 = 42,123,655.30 : x
  2. Step 2: Convert to fraction form
    128,405,354.26/192,567,571.88 = 42,123,655.30/x
  3. Step 3: Cross multiply
    128,405,354.26x = 192,567,571.88 × 42,123,655.30
  4. Step 4: Simplify right side
    128,405,354.26x = 8,111,650,019,831,092
  5. Step 5: Solve for x
    x = 8,111,650,019,831,092/128,405,354.26
  6. Step 6: Final answer
    x = 63,172,210.12

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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.