Home / 212,123,514.35-292,564,614.21-137,808,019.21

Finding the Fourth Proportional to 212,123,514.35, 292,564,614.21 and 137,808,019.21

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Solution

The fourth proportional to 212,123,514.35, 292,564,614.21 and 137,808,019.21 is: 190,067,329.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,123,514.35 : 292,564,614.21 = 137,808,019.21 : x
  2. Step 2: Convert to fraction form
    212,123,514.35/292,564,614.21 = 137,808,019.21/x
  3. Step 3: Cross multiply
    212,123,514.35x = 292,564,614.21 × 137,808,019.21
  4. Step 4: Simplify right side
    212,123,514.35x = 40,317,749,973,755,096
  5. Step 5: Solve for x
    x = 40,317,749,973,755,096/212,123,514.35
  6. Step 6: Final answer
    x = 190,067,329.87

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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.