Home / 12,128,113.80-18,192,170.70-8,709,176.70

Finding the Fourth Proportional to 12,128,113.80, 18,192,170.70 and 8,709,176.70

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Solution

The fourth proportional to 12,128,113.80, 18,192,170.70 and 8,709,176.70 is: 13,063,765.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,113.80 : 18,192,170.70 = 8,709,176.70 : x
  2. Step 2: Convert to fraction form
    12,128,113.80/18,192,170.70 = 8,709,176.70/x
  3. Step 3: Cross multiply
    12,128,113.80x = 18,192,170.70 × 8,709,176.70
  4. Step 4: Simplify right side
    12,128,113.80x = 158,438,829,182,862.66
  5. Step 5: Solve for x
    x = 158,438,829,182,862.66/12,128,113.80
  6. Step 6: Final answer
    x = 13,063,765.05

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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.