Home / 149,236,783.62-205,944,002.08-81,342,487.45

Finding the Fourth Proportional to 149,236,783.62, 205,944,002.08 and 81,342,487.45

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Solution

The fourth proportional to 149,236,783.62, 205,944,002.08 and 81,342,487.45 is: 112,251,128.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,236,783.62 : 205,944,002.08 = 81,342,487.45 : x
  2. Step 2: Convert to fraction form
    149,236,783.62/205,944,002.08 = 81,342,487.45/x
  3. Step 3: Cross multiply
    149,236,783.62x = 205,944,002.08 × 81,342,487.45
  4. Step 4: Simplify right side
    149,236,783.62x = 16,751,997,404,595,176
  5. Step 5: Solve for x
    x = 16,751,997,404,595,176/149,236,783.62
  6. Step 6: Final answer
    x = 112,251,128.70

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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.