Home / 212,107,073.90-318,160,979.90-66,551,805.57

Finding the Fourth Proportional to 212,107,073.90, 318,160,979.90 and 66,551,805.57

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Solution

The fourth proportional to 212,107,073.90, 318,160,979.90 and 66,551,805.57 is: 99,827,824.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,107,073.90 : 318,160,979.90 = 66,551,805.57 : x
  2. Step 2: Convert to fraction form
    212,107,073.90/318,160,979.90 = 66,551,805.57/x
  3. Step 3: Cross multiply
    212,107,073.90x = 318,160,979.90 × 66,551,805.57
  4. Step 4: Simplify right side
    212,107,073.90x = 21,174,187,673,932,716
  5. Step 5: Solve for x
    x = 21,174,187,673,932,716/212,107,073.90
  6. Step 6: Final answer
    x = 99,827,824.15

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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.