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Finding the Fourth Proportional to 109,476.90, 164,220.21 and 42,911.10

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Solution

The fourth proportional to 109,476.90, 164,220.21 and 42,911.10 is: 64,368.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,476.90 : 164,220.21 = 42,911.10 : x
  2. Step 2: Convert to fraction form
    109,476.90/164,220.21 = 42,911.10/x
  3. Step 3: Cross multiply
    109,476.90x = 164,220.21 × 42,911.10
  4. Step 4: Simplify right side
    109,476.90x = 7,046,869,853.33
  5. Step 5: Solve for x
    x = 7,046,869,853.33/109,476.90
  6. Step 6: Final answer
    x = 64,368.55

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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.