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Finding the Fourth Proportional to 160,630.90, 221,672.50 and 89,012.12

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Solution

The fourth proportional to 160,630.90, 221,672.50 and 89,012.12 is: 122,837.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,630.90 : 221,672.50 = 89,012.12 : x
  2. Step 2: Convert to fraction form
    160,630.90/221,672.50 = 89,012.12/x
  3. Step 3: Cross multiply
    160,630.90x = 221,672.50 × 89,012.12
  4. Step 4: Simplify right side
    160,630.90x = 19,731,537,839.81
  5. Step 5: Solve for x
    x = 19,731,537,839.81/160,630.90
  6. Step 6: Final answer
    x = 122,837.75

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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.