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Finding the Fourth Proportional to 109,942.40, 164,841.60 and 43,342.40

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Solution

The fourth proportional to 109,942.40, 164,841.60 and 43,342.40 is: 64,985.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,942.40 : 164,841.60 = 43,342.40 : x
  2. Step 2: Convert to fraction form
    109,942.40/164,841.60 = 43,342.40/x
  3. Step 3: Cross multiply
    109,942.40x = 164,841.60 × 43,342.40
  4. Step 4: Simplify right side
    109,942.40x = 7,144,630,563.84
  5. Step 5: Solve for x
    x = 7,144,630,563.84/109,942.40
  6. Step 6: Final answer
    x = 64,985.22

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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.