Home / 128,736,006.30-193,104,009.45-31,690,943.10

Finding the Fourth Proportional to 128,736,006.30, 193,104,009.45 and 31,690,943.10

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Solution

The fourth proportional to 128,736,006.30, 193,104,009.45 and 31,690,943.10 is: 47,536,414.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,736,006.30 : 193,104,009.45 = 31,690,943.10 : x
  2. Step 2: Convert to fraction form
    128,736,006.30/193,104,009.45 = 31,690,943.10/x
  3. Step 3: Cross multiply
    128,736,006.30x = 193,104,009.45 × 31,690,943.10
  4. Step 4: Simplify right side
    128,736,006.30x = 6,119,648,175,861,812
  5. Step 5: Solve for x
    x = 6,119,648,175,861,812/128,736,006.30
  6. Step 6: Final answer
    x = 47,536,414.65

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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.