Home / 121,562,920.86-167,756,882.58-65,808,339.72

Finding the Fourth Proportional to 121,562,920.86, 167,756,882.58 and 65,808,339.72

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Solution

The fourth proportional to 121,562,920.86, 167,756,882.58 and 65,808,339.72 is: 90,815,536.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,562,920.86 : 167,756,882.58 = 65,808,339.72 : x
  2. Step 2: Convert to fraction form
    121,562,920.86/167,756,882.58 = 65,808,339.72/x
  3. Step 3: Cross multiply
    121,562,920.86x = 167,756,882.58 × 65,808,339.72
  4. Step 4: Simplify right side
    121,562,920.86x = 11,039,801,919,192,790
  5. Step 5: Solve for x
    x = 11,039,801,919,192,790/121,562,920.86
  6. Step 6: Final answer
    x = 90,815,536.85

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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.