Home / 208,466.79-287,578.47-131,856.85

Finding the Fourth Proportional to 208,466.79, 287,578.47 and 131,856.85

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Solution

The fourth proportional to 208,466.79, 287,578.47 and 131,856.85 is: 181,895.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,466.79 : 287,578.47 = 131,856.85 : x
  2. Step 2: Convert to fraction form
    208,466.79/287,578.47 = 131,856.85/x
  3. Step 3: Cross multiply
    208,466.79x = 287,578.47 × 131,856.85
  4. Step 4: Simplify right side
    208,466.79x = 37,919,191,182.02
  5. Step 5: Solve for x
    x = 37,919,191,182.02/208,466.79
  6. Step 6: Final answer
    x = 181,895.60

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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.