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Finding the Fourth Proportional to 145,998.18, 218,892.10 and 89,721.97

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Solution

The fourth proportional to 145,998.18, 218,892.10 and 89,721.97 is: 134,518.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,998.18 : 218,892.10 = 89,721.97 : x
  2. Step 2: Convert to fraction form
    145,998.18/218,892.10 = 89,721.97/x
  3. Step 3: Cross multiply
    145,998.18x = 218,892.10 × 89,721.97
  4. Step 4: Simplify right side
    145,998.18x = 19,639,430,429.44
  5. Step 5: Solve for x
    x = 19,639,430,429.44/145,998.18
  6. Step 6: Final answer
    x = 134,518.32

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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.