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Finding the Fourth Proportional to 93,132.87, 128,468.88 and 67,609.50

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Solution

The fourth proportional to 93,132.87, 128,468.88 and 67,609.50 is: 93,261.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,132.87 : 128,468.88 = 67,609.50 : x
  2. Step 2: Convert to fraction form
    93,132.87/128,468.88 = 67,609.50/x
  3. Step 3: Cross multiply
    93,132.87x = 128,468.88 × 67,609.50
  4. Step 4: Simplify right side
    93,132.87x = 8,685,716,742.36
  5. Step 5: Solve for x
    x = 8,685,716,742.36/93,132.87
  6. Step 6: Final answer
    x = 93,261.56

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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.