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Finding the Fourth Proportional to 199,875.50, 299,780.40 and 71,765.26

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Solution

The fourth proportional to 199,875.50, 299,780.40 and 71,765.26 is: 107,636.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,875.50 : 299,780.40 = 71,765.26 : x
  2. Step 2: Convert to fraction form
    199,875.50/299,780.40 = 71,765.26/x
  3. Step 3: Cross multiply
    199,875.50x = 299,780.40 × 71,765.26
  4. Step 4: Simplify right side
    199,875.50x = 21,513,818,348.90
  5. Step 5: Solve for x
    x = 21,513,818,348.90/199,875.50
  6. Step 6: Final answer
    x = 107,636.10

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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.