Home / 109,417.92-151,012.80-66,969.60

Finding the Fourth Proportional to 109,417.92, 151,012.80 and 66,969.60

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Solution

The fourth proportional to 109,417.92, 151,012.80 and 66,969.60 is: 92,427.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,417.92 : 151,012.80 = 66,969.60 : x
  2. Step 2: Convert to fraction form
    109,417.92/151,012.80 = 66,969.60/x
  3. Step 3: Cross multiply
    109,417.92x = 151,012.80 × 66,969.60
  4. Step 4: Simplify right side
    109,417.92x = 10,113,266,810.88
  5. Step 5: Solve for x
    x = 10,113,266,810.88/109,417.92
  6. Step 6: Final answer
    x = 92,427.88

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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.