Home / 209,536,769.52-289,163,737.88-120,243,265.20

Finding the Fourth Proportional to 209,536,769.52, 289,163,737.88 and 120,243,265.20

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Solution

The fourth proportional to 209,536,769.52, 289,163,737.88 and 120,243,265.20 is: 165,937,425.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,536,769.52 : 289,163,737.88 = 120,243,265.20 : x
  2. Step 2: Convert to fraction form
    209,536,769.52/289,163,737.88 = 120,243,265.20/x
  3. Step 3: Cross multiply
    209,536,769.52x = 289,163,737.88 × 120,243,265.20
  4. Step 4: Simplify right side
    209,536,769.52x = 34,769,992,020,128,128
  5. Step 5: Solve for x
    x = 34,769,992,020,128,128/209,536,769.52
  6. Step 6: Final answer
    x = 165,937,425.21

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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.