Home / 137,148,994.45-205,781,138.16-85,376,922.67

Finding the Fourth Proportional to 137,148,994.45, 205,781,138.16 and 85,376,922.67

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Solution

The fourth proportional to 137,148,994.45, 205,781,138.16 and 85,376,922.67 is: 128,101,269.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,148,994.45 : 205,781,138.16 = 85,376,922.67 : x
  2. Step 2: Convert to fraction form
    137,148,994.45/205,781,138.16 = 85,376,922.67/x
  3. Step 3: Cross multiply
    137,148,994.45x = 205,781,138.16 × 85,376,922.67
  4. Step 4: Simplify right side
    137,148,994.45x = 17,568,960,319,630,906
  5. Step 5: Solve for x
    x = 17,568,960,319,630,906/137,148,994.45
  6. Step 6: Final answer
    x = 128,101,269.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.