Home / 208,507,657.80-312,910,785.90-87,426,006.60

Finding the Fourth Proportional to 208,507,657.80, 312,910,785.90 and 87,426,006.60

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Solution

The fourth proportional to 208,507,657.80, 312,910,785.90 and 87,426,006.60 is: 131,201,610.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,507,657.80 : 312,910,785.90 = 87,426,006.60 : x
  2. Step 2: Convert to fraction form
    208,507,657.80/312,910,785.90 = 87,426,006.60/x
  3. Step 3: Cross multiply
    208,507,657.80x = 312,910,785.90 × 87,426,006.60
  4. Step 4: Simplify right side
    208,507,657.80x = 27,356,540,433,304,584
  5. Step 5: Solve for x
    x = 27,356,540,433,304,584/208,507,657.80
  6. Step 6: Final answer
    x = 131,201,610.16

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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.