Home / 12,127,419,438.86-18,174,868,719.17-9,438,486,799.65

Finding the Fourth Proportional to 12,127,419,438.86, 18,174,868,719.17 and 9,438,486,799.65

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Solution

The fourth proportional to 12,127,419,438.86, 18,174,868,719.17 and 9,438,486,799.65 is: 14,145,075,080.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127,419,438.86 : 18,174,868,719.17 = 9,438,486,799.65 : x
  2. Step 2: Convert to fraction form
    12,127,419,438.86/18,174,868,719.17 = 9,438,486,799.65/x
  3. Step 3: Cross multiply
    12,127,419,438.86x = 18,174,868,719.17 × 9,438,486,799.65
  4. Step 4: Simplify right side
    12,127,419,438.86x = 171,543,258,491,286,061,056
  5. Step 5: Solve for x
    x = 171,543,258,491,286,061,056/12,127,419,438.86
  6. Step 6: Final answer
    x = 14,145,075,080.16

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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.