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Finding the Fourth Proportional to 109,558.64, 151,200.60 and 61,809.68

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Solution

The fourth proportional to 109,558.64, 151,200.60 and 61,809.68 is: 85,302.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,558.64 : 151,200.60 = 61,809.68 : x
  2. Step 2: Convert to fraction form
    109,558.64/151,200.60 = 61,809.68/x
  3. Step 3: Cross multiply
    109,558.64x = 151,200.60 × 61,809.68
  4. Step 4: Simplify right side
    109,558.64x = 9,345,660,701.81
  5. Step 5: Solve for x
    x = 9,345,660,701.81/109,558.64
  6. Step 6: Final answer
    x = 85,302.82

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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.