Home / 215,754,989.55-297,723,882.20-121,663,863.51

Finding the Fourth Proportional to 215,754,989.55, 297,723,882.20 and 121,663,863.51

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Solution

The fourth proportional to 215,754,989.55, 297,723,882.20 and 121,663,863.51 is: 167,885,979.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,754,989.55 : 297,723,882.20 = 121,663,863.51 : x
  2. Step 2: Convert to fraction form
    215,754,989.55/297,723,882.20 = 121,663,863.51/x
  3. Step 3: Cross multiply
    215,754,989.55x = 297,723,882.20 × 121,663,863.51
  4. Step 4: Simplify right side
    215,754,989.55x = 36,222,237,767,039,800
  5. Step 5: Solve for x
    x = 36,222,237,767,039,800/215,754,989.55
  6. Step 6: Final answer
    x = 167,885,979.57

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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.