Home / 120,138,180.16-165,789,688.80-67,937,465.92

Finding the Fourth Proportional to 120,138,180.16, 165,789,688.80 and 67,937,465.92

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Solution

The fourth proportional to 120,138,180.16, 165,789,688.80 and 67,937,465.92 is: 93,753,137.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,138,180.16 : 165,789,688.80 = 67,937,465.92 : x
  2. Step 2: Convert to fraction form
    120,138,180.16/165,789,688.80 = 67,937,465.92/x
  3. Step 3: Cross multiply
    120,138,180.16x = 165,789,688.80 × 67,937,465.92
  4. Step 4: Simplify right side
    120,138,180.16x = 11,263,331,332,737,406
  5. Step 5: Solve for x
    x = 11,263,331,332,737,406/120,138,180.16
  6. Step 6: Final answer
    x = 93,753,137.58

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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.