Home / 145,161,013.90-217,741,520.85-83,939,010.70

Finding the Fourth Proportional to 145,161,013.90, 217,741,520.85 and 83,939,010.70

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Solution

The fourth proportional to 145,161,013.90, 217,741,520.85 and 83,939,010.70 is: 125,908,516.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,161,013.90 : 217,741,520.85 = 83,939,010.70 : x
  2. Step 2: Convert to fraction form
    145,161,013.90/217,741,520.85 = 83,939,010.70/x
  3. Step 3: Cross multiply
    145,161,013.90x = 217,741,520.85 × 83,939,010.70
  4. Step 4: Simplify right side
    145,161,013.90x = 18,277,007,848,462,424
  5. Step 5: Solve for x
    x = 18,277,007,848,462,424/145,161,013.90
  6. Step 6: Final answer
    x = 125,908,516.05

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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.