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Finding the Fourth Proportional to 99,997.60, 149,607.60 and 65,005.60

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Solution

The fourth proportional to 99,997.60, 149,607.60 and 65,005.60 is: 97,255.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,997.60 : 149,607.60 = 65,005.60 : x
  2. Step 2: Convert to fraction form
    99,997.60/149,607.60 = 65,005.60/x
  3. Step 3: Cross multiply
    99,997.60x = 149,607.60 × 65,005.60
  4. Step 4: Simplify right side
    99,997.60x = 9,725,331,802.56
  5. Step 5: Solve for x
    x = 9,725,331,802.56/99,997.60
  6. Step 6: Final answer
    x = 97,255.65

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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.