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Finding the Fourth Proportional to 123,465.60, 170,265.60 and 89,697.60

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Solution

The fourth proportional to 123,465.60, 170,265.60 and 89,697.60 is: 123,697.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,465.60 : 170,265.60 = 89,697.60 : x
  2. Step 2: Convert to fraction form
    123,465.60/170,265.60 = 89,697.60/x
  3. Step 3: Cross multiply
    123,465.60x = 170,265.60 × 89,697.60
  4. Step 4: Simplify right side
    123,465.60x = 15,272,415,682.56
  5. Step 5: Solve for x
    x = 15,272,415,682.56/123,465.60
  6. Step 6: Final answer
    x = 123,697.74

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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.