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Finding the Fourth Proportional to 98,006.60, 135,325.14 and 75,309.68

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Solution

The fourth proportional to 98,006.60, 135,325.14 and 75,309.68 is: 103,985.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,006.60 : 135,325.14 = 75,309.68 : x
  2. Step 2: Convert to fraction form
    98,006.60/135,325.14 = 75,309.68/x
  3. Step 3: Cross multiply
    98,006.60x = 135,325.14 × 75,309.68
  4. Step 4: Simplify right side
    98,006.60x = 10,191,292,989.36
  5. Step 5: Solve for x
    x = 10,191,292,989.36/98,006.60
  6. Step 6: Final answer
    x = 103,985.78

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1.5x scale

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.