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Finding the Fourth Proportional to 97,335, 134,200.62 and 81,225.45

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Solution

The fourth proportional to 97,335, 134,200.62 and 81,225.45 is: 111,989.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,335 : 134,200.62 = 81,225.45 : x
  2. Step 2: Convert to fraction form
    97,335/134,200.62 = 81,225.45/x
  3. Step 3: Cross multiply
    97,335x = 134,200.62 × 81,225.45
  4. Step 4: Simplify right side
    97,335x = 10,900,505,749.78
  5. Step 5: Solve for x
    x = 10,900,505,749.78/97,335
  6. Step 6: Final answer
    x = 111,989.58

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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.