Home / 149,561,543.82-206,429,368.14-87,701,811.42

Finding the Fourth Proportional to 149,561,543.82, 206,429,368.14 and 87,701,811.42

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Solution

The fourth proportional to 149,561,543.82, 206,429,368.14 and 87,701,811.42 is: 121,048,693.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,561,543.82 : 206,429,368.14 = 87,701,811.42 : x
  2. Step 2: Convert to fraction form
    149,561,543.82/206,429,368.14 = 87,701,811.42/x
  3. Step 3: Cross multiply
    149,561,543.82x = 206,429,368.14 × 87,701,811.42
  4. Step 4: Simplify right side
    149,561,543.82x = 18,104,229,516,164,036
  5. Step 5: Solve for x
    x = 18,104,229,516,164,036/149,561,543.82
  6. Step 6: Final answer
    x = 121,048,693.76

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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.