Home / 121,143,855.51-167,177,658.38-66,139,712.55

Finding the Fourth Proportional to 121,143,855.51, 167,177,658.38 and 66,139,712.55

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Solution

The fourth proportional to 121,143,855.51, 167,177,658.38 and 66,139,712.55 is: 91,272,332.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,143,855.51 : 167,177,658.38 = 66,139,712.55 : x
  2. Step 2: Convert to fraction form
    121,143,855.51/167,177,658.38 = 66,139,712.55/x
  3. Step 3: Cross multiply
    121,143,855.51x = 167,177,658.38 × 66,139,712.55
  4. Step 4: Simplify right side
    121,143,855.51x = 11,057,082,269,704,600
  5. Step 5: Solve for x
    x = 11,057,082,269,704,600/121,143,855.51
  6. Step 6: Final answer
    x = 91,272,332.58

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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.