Home / 215,985,586.66-298,098,908.82-121,928,402.86

Finding the Fourth Proportional to 215,985,586.66, 298,098,908.82 and 121,928,402.86

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Solution

The fourth proportional to 215,985,586.66, 298,098,908.82 and 121,928,402.86 is: 168,283,098.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,985,586.66 : 298,098,908.82 = 121,928,402.86 : x
  2. Step 2: Convert to fraction form
    215,985,586.66/298,098,908.82 = 121,928,402.86/x
  3. Step 3: Cross multiply
    215,985,586.66x = 298,098,908.82 × 121,928,402.86
  4. Step 4: Simplify right side
    215,985,586.66x = 36,346,723,846,731,368
  5. Step 5: Solve for x
    x = 36,346,723,846,731,368/215,985,586.66
  6. Step 6: Final answer
    x = 168,283,098.93

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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.