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Finding the Fourth Proportional to 106,985.90, 147,630.26 and 63,956.88

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Solution

The fourth proportional to 106,985.90, 147,630.26 and 63,956.88 is: 88,254.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,985.90 : 147,630.26 = 63,956.88 : x
  2. Step 2: Convert to fraction form
    106,985.90/147,630.26 = 63,956.88/x
  3. Step 3: Cross multiply
    106,985.90x = 147,630.26 × 63,956.88
  4. Step 4: Simplify right side
    106,985.90x = 9,441,970,503.40
  5. Step 5: Solve for x
    x = 9,441,970,503.40/106,985.90
  6. Step 6: Final answer
    x = 88,254.35

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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.