Home / 121,931,974.94-168,266,292.04-66,177,396.20

Finding the Fourth Proportional to 121,931,974.94, 168,266,292.04 and 66,177,396.20

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Solution

The fourth proportional to 121,931,974.94, 168,266,292.04 and 66,177,396.20 is: 91,324,897.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,931,974.94 : 168,266,292.04 = 66,177,396.20 : x
  2. Step 2: Convert to fraction form
    121,931,974.94/168,266,292.04 = 66,177,396.20/x
  3. Step 3: Cross multiply
    121,931,974.94x = 168,266,292.04 × 66,177,396.20
  4. Step 4: Simplify right side
    121,931,974.94x = 11,135,425,075,435,986
  5. Step 5: Solve for x
    x = 11,135,425,075,435,986/121,931,974.94
  6. Step 6: Final answer
    x = 91,324,897.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.