Home / 216,145.28-324,180.12-97,788.80

Finding the Fourth Proportional to 216,145.28, 324,180.12 and 97,788.80

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Solution

The fourth proportional to 216,145.28, 324,180.12 and 97,788.80 is: 146,666.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,145.28 : 324,180.12 = 97,788.80 : x
  2. Step 2: Convert to fraction form
    216,145.28/324,180.12 = 97,788.80/x
  3. Step 3: Cross multiply
    216,145.28x = 324,180.12 × 97,788.80
  4. Step 4: Simplify right side
    216,145.28x = 31,701,184,918.66
  5. Step 5: Solve for x
    x = 31,701,184,918.66/216,145.28
  6. Step 6: Final answer
    x = 146,666.10

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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.