Home / 12,121,109.28-16,730,628.84-7,164,142.56

Finding the Fourth Proportional to 12,121,109.28, 16,730,628.84 and 7,164,142.56

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Solution

The fourth proportional to 12,121,109.28, 16,730,628.84 and 7,164,142.56 is: 9,888,584.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121,109.28 : 16,730,628.84 = 7,164,142.56 : x
  2. Step 2: Convert to fraction form
    12,121,109.28/16,730,628.84 = 7,164,142.56/x
  3. Step 3: Cross multiply
    12,121,109.28x = 16,730,628.84 × 7,164,142.56
  4. Step 4: Simplify right side
    12,121,109.28x = 119,860,610,128,207.42
  5. Step 5: Solve for x
    x = 119,860,610,128,207.42/12,121,109.28
  6. Step 6: Final answer
    x = 9,888,584.23

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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.