Home / 85,919,244.80-129,028,166.40-83,231,859.20

Finding the Fourth Proportional to 85,919,244.80, 129,028,166.40 and 83,231,859.20

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Solution

The fourth proportional to 85,919,244.80, 129,028,166.40 and 83,231,859.20 is: 124,992,418.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,919,244.80 : 129,028,166.40 = 83,231,859.20 : x
  2. Step 2: Convert to fraction form
    85,919,244.80/129,028,166.40 = 83,231,859.20/x
  3. Step 3: Cross multiply
    85,919,244.80x = 129,028,166.40 × 83,231,859.20
  4. Step 4: Simplify right side
    85,919,244.80x = 10,739,254,178,638,972
  5. Step 5: Solve for x
    x = 10,739,254,178,638,972/85,919,244.80
  6. Step 6: Final answer
    x = 124,992,418.21

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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.