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Finding the Fourth Proportional to 89,997.80, 134,802.30 and 74,445.80

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Solution

The fourth proportional to 89,997.80, 134,802.30 and 74,445.80 is: 111,507.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,997.80 : 134,802.30 = 74,445.80 : x
  2. Step 2: Convert to fraction form
    89,997.80/134,802.30 = 74,445.80/x
  3. Step 3: Cross multiply
    89,997.80x = 134,802.30 × 74,445.80
  4. Step 4: Simplify right side
    89,997.80x = 10,035,465,065.34
  5. Step 5: Solve for x
    x = 10,035,465,065.34/89,997.80
  6. Step 6: Final answer
    x = 111,507.89

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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.