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Finding the Fourth Proportional to 109,999.80, 164,999.70 and 103,548.60

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Solution

The fourth proportional to 109,999.80, 164,999.70 and 103,548.60 is: 155,322.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,999.80 : 164,999.70 = 103,548.60 : x
  2. Step 2: Convert to fraction form
    109,999.80/164,999.70 = 103,548.60/x
  3. Step 3: Cross multiply
    109,999.80x = 164,999.70 × 103,548.60
  4. Step 4: Simplify right side
    109,999.80x = 17,085,487,935.42
  5. Step 5: Solve for x
    x = 17,085,487,935.42/109,999.80
  6. Step 6: Final answer
    x = 155,322.90

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1.5x scale

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.