Home / 128,736,007.80-193,104,011.70-31,690,944.60

Finding the Fourth Proportional to 128,736,007.80, 193,104,011.70 and 31,690,944.60

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Solution

The fourth proportional to 128,736,007.80, 193,104,011.70 and 31,690,944.60 is: 47,536,416.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,736,007.80 : 193,104,011.70 = 31,690,944.60 : x
  2. Step 2: Convert to fraction form
    128,736,007.80/193,104,011.70 = 31,690,944.60/x
  3. Step 3: Cross multiply
    128,736,007.80x = 193,104,011.70 × 31,690,944.60
  4. Step 4: Simplify right side
    128,736,007.80x = 6,119,648,536,822,452
  5. Step 5: Solve for x
    x = 6,119,648,536,822,452/128,736,007.80
  6. Step 6: Final answer
    x = 47,536,416.90

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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.