Home / 109,639.16-151,276.38-64,314.80

Finding the Fourth Proportional to 109,639.16, 151,276.38 and 64,314.80

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Solution

The fourth proportional to 109,639.16, 151,276.38 and 64,314.80 is: 88,739.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,639.16 : 151,276.38 = 64,314.80 : x
  2. Step 2: Convert to fraction form
    109,639.16/151,276.38 = 64,314.80/x
  3. Step 3: Cross multiply
    109,639.16x = 151,276.38 × 64,314.80
  4. Step 4: Simplify right side
    109,639.16x = 9,729,310,124.42
  5. Step 5: Solve for x
    x = 9,729,310,124.42/109,639.16
  6. Step 6: Final answer
    x = 88,739.37

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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.