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Finding the Fourth Proportional to 138,465.60, 207,795.60 and 59,636.40

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Solution

The fourth proportional to 138,465.60, 207,795.60 and 59,636.40 is: 89,496.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,465.60 : 207,795.60 = 59,636.40 : x
  2. Step 2: Convert to fraction form
    138,465.60/207,795.60 = 59,636.40/x
  3. Step 3: Cross multiply
    138,465.60x = 207,795.60 × 59,636.40
  4. Step 4: Simplify right side
    138,465.60x = 12,392,181,519.84
  5. Step 5: Solve for x
    x = 12,392,181,519.84/138,465.60
  6. Step 6: Final answer
    x = 89,496.46

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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.