Home / 109,941.78-151,723.40-64,619.12

Finding the Fourth Proportional to 109,941.78, 151,723.40 and 64,619.12

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Solution

The fourth proportional to 109,941.78, 151,723.40 and 64,619.12 is: 89,176.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,941.78 : 151,723.40 = 64,619.12 : x
  2. Step 2: Convert to fraction form
    109,941.78/151,723.40 = 64,619.12/x
  3. Step 3: Cross multiply
    109,941.78x = 151,723.40 × 64,619.12
  4. Step 4: Simplify right side
    109,941.78x = 9,804,232,591.41
  5. Step 5: Solve for x
    x = 9,804,232,591.41/109,941.78
  6. Step 6: Final answer
    x = 89,176.59

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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.