Home / 12,144,065.40-18,221,133.78-5,317,115.40

Finding the Fourth Proportional to 12,144,065.40, 18,221,133.78 and 5,317,115.40

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Solution

The fourth proportional to 12,144,065.40, 18,221,133.78 and 5,317,115.40 is: 7,977,877.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,144,065.40 : 18,221,133.78 = 5,317,115.40 : x
  2. Step 2: Convert to fraction form
    12,144,065.40/18,221,133.78 = 5,317,115.40/x
  3. Step 3: Cross multiply
    12,144,065.40x = 18,221,133.78 × 5,317,115.40
  4. Step 4: Simplify right side
    12,144,065.40x = 96,883,871,027,098.22
  5. Step 5: Solve for x
    x = 96,883,871,027,098.22/12,144,065.40
  6. Step 6: Final answer
    x = 7,977,877.90

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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.