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Finding the Fourth Proportional to 135,363.22, 186,802.88 and 74,939.45

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Solution

The fourth proportional to 135,363.22, 186,802.88 and 74,939.45 is: 103,417.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,363.22 : 186,802.88 = 74,939.45 : x
  2. Step 2: Convert to fraction form
    135,363.22/186,802.88 = 74,939.45/x
  3. Step 3: Cross multiply
    135,363.22x = 186,802.88 × 74,939.45
  4. Step 4: Simplify right side
    135,363.22x = 13,998,903,776.90
  5. Step 5: Solve for x
    x = 13,998,903,776.90/135,363.22
  6. Step 6: Final answer
    x = 103,417.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.