Home / 208,136,962.08-287,231,318.16-115,318,932

Finding the Fourth Proportional to 208,136,962.08, 287,231,318.16 and 115,318,932

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Solution

The fourth proportional to 208,136,962.08, 287,231,318.16 and 115,318,932 is: 159,141,406.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,136,962.08 : 287,231,318.16 = 115,318,932 : x
  2. Step 2: Convert to fraction form
    208,136,962.08/287,231,318.16 = 115,318,932/x
  3. Step 3: Cross multiply
    208,136,962.08x = 287,231,318.16 × 115,318,932
  4. Step 4: Simplify right side
    208,136,962.08x = 33,123,208,847,163,408
  5. Step 5: Solve for x
    x = 33,123,208,847,163,408/208,136,962.08
  6. Step 6: Final answer
    x = 159,141,406.29

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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.