Home / 109,985.60-164,962.20-31,107.80

Finding the Fourth Proportional to 109,985.60, 164,962.20 and 31,107.80

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Solution

The fourth proportional to 109,985.60, 164,962.20 and 31,107.80 is: 46,657.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,985.60 : 164,962.20 = 31,107.80 : x
  2. Step 2: Convert to fraction form
    109,985.60/164,962.20 = 31,107.80/x
  3. Step 3: Cross multiply
    109,985.60x = 164,962.20 × 31,107.80
  4. Step 4: Simplify right side
    109,985.60x = 5,131,611,125.16
  5. Step 5: Solve for x
    x = 5,131,611,125.16/109,985.60
  6. Step 6: Final answer
    x = 46,657.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.