Home / 149,630.64-206,495.27-81,651.35

Finding the Fourth Proportional to 149,630.64, 206,495.27 and 81,651.35

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Solution

The fourth proportional to 149,630.64, 206,495.27 and 81,651.35 is: 112,681.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,630.64 : 206,495.27 = 81,651.35 : x
  2. Step 2: Convert to fraction form
    149,630.64/206,495.27 = 81,651.35/x
  3. Step 3: Cross multiply
    149,630.64x = 206,495.27 × 81,651.35
  4. Step 4: Simplify right side
    149,630.64x = 16,860,616,123.38
  5. Step 5: Solve for x
    x = 16,860,616,123.38/149,630.64
  6. Step 6: Final answer
    x = 112,681.57

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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.